Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi doan tre snippets" » "thai doan tre snippets", "thi hoan tre snippets", "thi loan tre snippets", "thi doanh tren snippets", "thi doan truc snippets", "thi doan thi 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 doan tre 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 doan tre snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi doan tre snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi doan tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.