Perhaps you should try some spelling variations:
"quang pho cong snippets" » "quang hoi cong snippets", "quang cao cong snippets", "quang hoc cong snippets", "quang pho uong snippets", "quang cho cong snippets", "quang pho dong snippets"
"dung java java snippets" » "dung va java 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: (((("quang pho cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quang pho cong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quang pho cong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quang pho cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.