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