Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vu khang cau snippets" » "vu hang cau snippets", "vu khang cu snippets", "vu khang chan snippets", "vu khanh cau snippets", "su khang cau snippets", "va khang 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: (((("vu khang 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: (((("vu khang cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vu khang cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vu khang cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.