Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua chi cua snippets" » "quan chi cua snippets", "qua cai cua snippets", "cua chi cua snippets", "qua chi cuc snippets", "qua khi cua snippets", "qua cuoi cua 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: (((("qua chi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("qua chi cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua chi cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua chi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.