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