Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi tu tong snippets" » "khi tu tuong snippets", "khi tu trong snippets", "khi tu dong snippets", "khi cu tong snippets", "thi tu tong snippets", "chi tu tong 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: (((("khi tu tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khi tu tong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi tu tong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi tu tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.