Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho vit cham snippets" » "cho viet cham snippets", "cho viet chau snippets", "cho va cham snippets", "tho viet cham snippets", "cho viec 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: (((("cho vit 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: (((("cho vit cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho vit cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho vit cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.