Perhaps you should try some spelling variations:
"dung dao dong snippets" » "dung dao code snippets", "duong dao dong snippets", "dung dat dong snippets", "dong dao dong snippets", "dung lao dong snippets", "dung ha dong snippets", "dung bat dong snippets"
"locating bug core snippets" » "locating bug code snippets"
"hanh java java snippets" » "hanh va java 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: (((("hanh java java snippets") or ("dung dao dong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hanh java java snippets") OR ("dung dao dong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hanh java java snippets ) or ( dung dao dong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh java java snippets") or ("dung dao dong snippets"))) or ("locating bug core snippets"))*.