Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tri hieu chi snippets" » "tri lieu chi snippets", "thi hieu chi snippets", "trien hieu chi snippets", "tri hieu cac snippets", "tri hieu moi 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 hieu chi 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 hieu chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tri hieu chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tri hieu chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.