Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho van cau snippets" » "chao van cau snippets", "chon van cau snippets", "cho vay cau snippets", "cho van dau snippets", "cho van hau snippets", "cho van chat 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: (((("cho van 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: (((("cho van cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho van cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho van cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.