Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi lan cao snippets" » "thi hanh cao snippets", "thi nang cao snippets", "thi lien cao snippets", "thi lang cao snippets", "thi lan cho 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 lan cao 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 lan cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi lan cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi lan cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.