Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khat hoa cac snippets" » "khat khoa cac snippets", "chat hoa cac snippets", "khat ha cac snippets", "khat hoa chat snippets", "khat chon cac 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 hoa cac 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 hoa cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khat hoa cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khat hoa cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.