Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cach thu hoi snippets" » "cach thuc hoi snippets", "cac thu hoi snippets", "cach tu hoi snippets", "cach thu hoai snippets", "cach thu phoi snippets", "cach thu hai 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: (((("cach thu 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: (((("cach thu hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cach thu hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cach thu hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.