Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kha trinh ke snippets" » "qua trinh ke snippets", "ha tinh ke snippets", "tra trinh ke snippets", "kha trinh ky snippets", "kha trinh he snippets", "kha trinh ve 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: (((("kha trinh ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kha trinh ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kha trinh ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kha trinh ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.