Perhaps you should try some spelling variations:
quyen tai » xuyen tai, nguyen tai, truyen tai
cong dung » cuong dung, cong luong, thong dung
cac chu » cac che, ca chu, cac cau
cac thu » cach thuc, cac thoi
cac khu » cac khoi, cac kieu
ban ke » ban kem, ban ve, ban le
y thu » ly thu, ky thu, y thuc
ke y » ke ky, ke o

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

• Performing a fuzzy search may retrieve terms with similar spellings: quyen tai ((((cac chu) or (cac thu))) or (cac khu)) đe co ban ke y thu ((cong dung) or (cong dong))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: quyen tai ((((cac chu) OR (cac thu))) OR (cac khu)) đe co ban ke y thu ((cong dung) OR (cong dong)).
• Adding a wildcard symbol may retrieve word variants: quyen tai ((((cac chu) or (cac thu))) or (cac khu)) đe co ban ke y thu ((cong dung) or (cong dong))*.