Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trieu ke cau snippets" » "trieu le cau snippets", "trieu kien cau snippets", "trieu tkv cau snippets", "trieu ket cau 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: (((("trieu ke cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trieu ke cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trieu ke cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trieu ke cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.