Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh hang » thanh hoang, thanh thang, tranh hang
nhung cong » dung cong, thong cong, hang cong
hieu manh » hieu nganh, dieu hanh, hien hanh
cong van » cong vang, cong san, song van
quan tap » quan lap, quan tam, quan tay
quan tai » quan tri, quang tri, quan li

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (chieu xanh)) - thanh hang va nhung cong van ((quan tap) or (quan tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu xanh)) - thanh hang va nhung cong van ((quan tap) OR (quan tai)).
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu xanh)) - thanh hang va nhung cong van ((quan tap) or (quan tai))*.