Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu xac cach snippets" » "thu cac cach snippets", "thu va cach snippets", "thu cai cach snippets", "thau xay cach 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 xac cach 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 xac cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu xac cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu xac cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.