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