Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vat moi cau snippets" » "va moi cau snippets", "bat moi cau snippets", "vao moi cau snippets", "vat hoi cau snippets", "vat loi cau snippets", "vat gioi cau 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 moi 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 moi cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vat moi cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vat moi cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.