Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tac hay cham snippets" » "tac hanh cham snippets", "tac va cham snippets", "tac hay nhat snippets", "tac ha cham snippets", "tac cay cham snippets", "tac hai cham 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 hay cham 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 hay cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tac hay cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac hay cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.