Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"lang van son snippets" » "lang van code snippets", "dang van son snippets", "tang van son snippets", "hoang van son snippets", "lang van dong snippets", "lang van cong snippets", "lang van sung snippets"
"python using java snippets" » "python using data snippets"

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

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