Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi cuu hoan snippets" » "khi luu hoang snippets", "khi cuu van snippets", "khi cuu khoa snippets", "khi cua hoan snippets", "khi cu hoan snippets", "khao cuu hoan 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 cuu hoan 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 cuu hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi cuu hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi cuu hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.