Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"manh tu cho snippets" » "anh tu cho snippets", "danh tu cho snippets", "hanh tu cho snippets", "manh tu choi snippets", "manh tu chon snippets", "manh cu cho 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: (((("manh tu cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("manh tu cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( manh tu cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("manh tu cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.