Perhaps you should try some spelling variations:
"lan tranh cai snippets" » "lanh tranh cai snippets", "luan tranh cai snippets", "can tranh cai snippets", "lan tranh cac snippets", "lan trinh cai snippets", "lan tranh chap 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: (((("lan tranh cai snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lan tranh cai snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan tranh cai snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan tranh cai snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.