Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi tam long snippets" » "thi tram long snippets", "thi tam nong snippets", "thi ta long snippets", "thi thao long snippets", "thi tran long 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 tam long 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 tam long snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi tam long snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi tam long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.