Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tac kiem hoi snippets" » "tac ke hoi snippets", "thi kiem hoi snippets", "va kiem hoi snippets", "tac viem phoi snippets", "tac khien hoi snippets", "tac kien hoa 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: (((("tac kiem hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tac kiem hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tac kiem hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac kiem hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.