Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tren tri hoc snippets" » "trien tri hoc snippets", "tren thi hoc snippets", "tran tri hoc snippets", "tren triet hoc snippets", "tren tri thuc snippets", "tren thai hoc 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: (((("tren tri hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tren tri hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tren tri hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tren tri hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.