Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung quang du snippets" » "dung quang code snippets", "dang quang du snippets", "luong quang du snippets", "dung luan du snippets", "dung quang duc snippets", "dung quang duy snippets", "dung quang cu 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 quang du 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 quang du snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hanh java java snippets ) or ( dung quang du snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh java java snippets") or ("dung quang du snippets"))) or ("locating bug core snippets"))*.