Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan thu che snippets" » "van thu che snippets", "luan thuc che snippets", "dan thuc che snippets", "lan thue che snippets", "lan thu chi snippets", "lan tu che 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: (((("lan thu che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lan thu che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan thu che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan thu che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.