Perhaps you should try some spelling variations:
"duong java java snippets" » "duong va java snippets"
"luong tai hoe snippets" » "dung tai hoe snippets", "luong va hoe snippets", "luong tai he snippets", "luong tai khoa snippets", "luong thai hoc 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: (((("luong tai hoe snippets") or ("duong java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luong tai hoe snippets") OR ("duong java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong tai hoe snippets ) or ( duong java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong tai hoe snippets") or ("duong java java snippets"))) or ("locating bug code snippets"))*.