Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van hai hoc snippets" » "van hai code snippets", "van ha hoc snippets", "van chat hoc snippets", "van hanh hoc snippets", "van thai hoc snippets", "van hai huoc snippets", "van dai hoc snippets"
"python using java snippets" » "python using data 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 hai hoc snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("van hai hoc snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( van hai hoc snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("van hai hoc snippets"))) or ("locating bug core snippets"))*.