Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using c snippets" » "python using code snippets", "python using lc snippets", "python using a snippets", "python using _ snippets"
"dong trinh java snippets" » "cong trinh java snippets", "dong tinh java snippets", "dong tranh java 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 c snippets") or ("dong trinh java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using c snippets") OR ("dong trinh java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using c snippets ) or ( dong trinh java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using c snippets") or ("dong trinh java snippets"))) or ("locating bug core snippets"))*.