Perhaps you should try some spelling variations:
"qua trong lai snippets" » "quan trong lai snippets", "qua trinh lai snippets", "qua song lai snippets", "qua tuong lai snippets", "qua trong lam snippets", "qua trong hai snippets", "qua trong lai slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"qua trong lai snippets\") OR (\"dung java java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( qua trong lai snippets ) OR ( dung java java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("qua trong lai snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets"))*.