Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi hang cau snippets" » "thi hang cau snippets", "thai hang cau snippets", "thi hoang cau snippets", "khi hang dau snippets", "khi hang ca snippets", "khi nhung cau 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: (((("khi hang cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khi hang cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi hang cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi hang cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.