Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con cham voi snippets" » "co cham voi snippets", "con chim voi snippets", "cong chat voi snippets", "con cham hoi snippets", "con pham voi snippets", "con cham soc 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: (((("con cham 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: (((("con cham voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con cham voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con cham voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.