Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vat loi cau snippets" » "vat li cau snippets", "van loi cau snippets", "va loi cau snippets", "vat loi ca snippets", "vat hoi cau snippets", "vat loi can 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: (((("vat loi cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vat loi cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vat loi cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vat loi cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.