Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong vang da snippets" » "cong vang code snippets", "cong lang da snippets", "cong quang da snippets", "cong ngang da snippets", "cong vang de snippets", "cong tang da snippets", "cong hang dau 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: (((("cong vang da snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong vang da snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong vang da snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong vang da snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.