Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khat sua doc snippets" » "thuat sua doc snippets", "khat ha doc snippets", "luat sua doc snippets", "khat sua doi snippets", "khat cua duoc snippets", "khat qua duoc 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: (((("khat sua doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khat sua doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khat sua doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khat sua doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.