Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vu khieu cua snippets" » "vu hieu cua snippets", "vu khien cua snippets", "vu thieu cua snippets", "ve khieu cua snippets", "vu khiem cua snippets", "va hieu 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: (((("vu khieu 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: (((("vu khieu cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vu khieu cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vu khieu cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.