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