Perhaps you should try some spelling variations:
"hong tham cac snippets" » "chong tham cac snippets", "hong thai cac snippets", "hoang thai cac snippets", "hong thac cac snippets", "hong thoai cac snippets", "hong tham canh 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: (((("hong tham cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hong tham cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hong tham cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hong tham cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.