Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu voi hoat snippets" » "thu toi hoat snippets", "thu doi hoat snippets", "thu vo hoat snippets", "thu hoi hoat snippets", "thu moi hoat snippets", "thu vi hoat 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: (((("thu voi hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu voi hoat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu voi hoat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu voi hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.