Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan van voi snippets" » "luan van voi snippets", "lang van voi snippets", "tan van voi snippets", "lan van loi snippets", "lan van noi snippets", "lan van von snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("lan van voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lan van voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan van voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan van voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.