Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"dung tri cap snippets" » "dung tai cap snippets", "dung tren cap snippets", "nhung tri cap snippets", "dung thi cap snippets", "dung tri cac snippets", "dung tro cap 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: (((("dung tri cap snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung tri cap snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung tri cap snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung tri cap snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.