Perhaps you should try some spelling variations:
"locatinhg bug code snippets" » "locating bug code snippets", "locatinhg bug core snippets"
"python using java snippets" » "python using data snippets"
"van son cac snippets" » "van dong cac snippets", "van cong cac snippets", "van sung cac snippets", "van ton cac snippets", "van con cac snippets", "van son bac snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using java snippets") or ("van son cac snippets"))) or ("locatinhg bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("van son cac snippets"))) OR ("locatinhg bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( van son cac snippets ))) or ( locatinhg bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("van son cac snippets"))) or ("locatinhg bug code snippets"))*.