Perhaps you should try some spelling variations:
"trong chu chan snippets" » "trong thu chan snippets", "trong cho chan snippets", "trong che chan snippets", "trong chu han snippets", "trong chua chay snippets", "trong chu van snippets"
"dung java java snippets" » "dung va java 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: (((("trong chu chan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong chu chan snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong chu chan snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong chu chan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.