Perhaps you should try some spelling variations:
"nang java java snippets" » "nang va java snippets", "nang java java slippers"
"tin hoc code snippets" » "tin hoc co snippets", "tin hoc cong snippets", "tin hoc de snippets", "sinh hoc code snippets", "tin hoc code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("nang java java snippets") or ("tin hoc code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang java java snippets") OR ("tin hoc code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang java java snippets ) or ( tin hoc code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang java java snippets") or ("tin hoc code snippets"))) or ("locating bug code snippets"))*.