Why I can not search a tweet/retweet of some account contain url by search API?

[bindaik]

I tried on many accounts, but this is just an example in two accounts.
account 1: @TuanHai27055676
account 2: @bindaik

• tweet/retweet not contain url:
  • tweet of account 1: https://twitter.com/TuanHai27055676/status/966584150105849856
  • tweet of account 2: https://twitter.com/bindaik/status/966584470143823872
    same content: "nothing special 22/2/2018"
    query: https://api.twitter.com/1.1/search/tweets.json?q=nothing+special+22%2F2%2F2018
    It work well, get both results. https://www.awesomescreenshot.com/image/3190314/1417933e17c8f7f8313f2e3931a3fc0a
    results detail:
    https://www.awesomescreenshot.com/image/3190337/2344048669c5b3d1e08a7e71b9712a4d
• tweet/retweet contain url:
  • tweet of account 1: https://twitter.com/TuanHai27055676/status/966583738153943040
  • tweet of account 2: https://twitter.com/bindaik/status/966560300999655424
    same content: "scuti.asia veryspecialstringfortesting"
    query:
    https://api.twitter.com/1.1/search/tweets.json?q=scuti.asia++veryspecialstringfortesting
    or
    https://api.twitter.com/1.1/search/tweets.json?q=veryspecialstringfortesting
    It not working with account 2, get only one results of account 1. https://www.awesomescreenshot.com/image/3190349/b15dd88547aa644e29ac38e688f518a4
    results detail:
    https://www.awesomescreenshot.com/image/3190351/e5248618370f2f1e7010a0918d57fee4

I have try on some an other account. Can you help me get it? Thank so much!

[bindaik]

Hello, Is any body here?