Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tro cho lon snippets" » "tro choi lon snippets", "tao cho lon snippets", "tra cho lon snippets", "tro cho cong snippets", "tro chon loc 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: (((("tro cho lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tro cho lon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tro cho lon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tro cho lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.