Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khat sua cau snippets" » "thuat sua cau snippets", "khat ha cau snippets", "luat sua cau snippets", "khat cua cau snippets", "khat lua cau snippets", "khat su 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: (((("khat sua 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: (((("khat sua cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khat sua cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khat sua cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.