Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi luong du snippets" » "thi huong du snippets", "thi cuong du snippets", "thi muong du snippets", "thi luong duc snippets", "thi luong duy snippets", "thi luong tu 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 luong du 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 luong du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi luong du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi luong du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.