Perhaps you should try some spelling variations:
"lophating bug code snippets" » "locating bug code snippets", "lophating bug code slippers", "lophating bug core snippets"
"python using java snippets" » "python using data snippets", "python using java slippers"
"pham van tu snippets" » "pham van thu snippets", "pham van du snippets", "pham ban tu snippets", "phan van tu snippets", "pham van tu slippers"

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: (((("pham van tu snippets") or ("python using java snippets"))) or ("lophating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham van tu snippets") OR ("python using java snippets"))) OR ("lophating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham van tu snippets ) or ( python using java snippets ))) or ( lophating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham van tu snippets") or ("python using java snippets"))) or ("lophating bug code snippets"))*.