Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tri moi chon snippets" » "tri mo chon snippets", "tri moi cho snippets", "tri moi con snippets", "tri mot chon snippets", "thi moi chon snippets", "tri doi chon 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: (((("tri moi chon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tri moi chon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tri moi chon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tri moi chon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.