Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tac hai cua snippets" » "tuc hai cua snippets", "tac ha cua snippets", "tai hai cua snippets", "tac thai cua snippets", "tac hoi cua snippets", "tac dai 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 hai cua 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 hai cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tac hai cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac hai cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.