Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"liu lang son snippets" » "liu yang son snippets", "hieu lang son snippets", "cu lang son snippets", "liu nang song snippets", "liu bang song snippets", "liu anh son 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: (((("liu lang son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("liu lang son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( liu lang son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("liu lang son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.