Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi hieu he snippets" » "thi chieu he snippets", "thi hien he snippets", "thi dieu he snippets", "thi hieu ve snippets", "thi hiem he snippets", "thi hieu le 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 hieu he 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 hieu he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi hieu he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi hieu he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.