Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi co dong snippets" » "khi o dong snippets", "khi cong dong snippets", "khi lao dong snippets", "khi con dong snippets", "khi cu dong snippets", "khi mo dong 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 co dong 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 co dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi co dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi co dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.