Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thap ve canh snippets" » "tap ve canh snippets", "phap ve canh snippets", "thanh ve canh snippets", "thap van canh snippets", "thap ve thanh 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: (((("thap ve canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thap ve canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thap ve canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thap ve canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.