Perhaps you should try some spelling variations:
"khang using java snippets" » "khang sinh java snippets", "khang using data snippets"
"luong cac che snippets" » "luong cuoc che snippets", "luong va che snippets", "luong tai che snippets", "luong cac he snippets", "luong cac chien snippets", "luong cac chat 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: (((("khang using java snippets") or ("luong cac che snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khang using java snippets") OR ("luong cac che snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khang using java snippets ) or ( luong cac che snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khang using java snippets") or ("luong cac che snippets"))) or ("locating bug code snippets"))*.