Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tac kiem cuc snippets" » "tac ke cuc snippets", "thi kiem cuc snippets", "va kiem cuc snippets", "tac kim cuc snippets", "tac dien cuc snippets", "tac diem cua 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: (((("tac kiem cuc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tac kiem cuc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tac kiem cuc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac kiem cuc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.