Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
canh trinh » canh tranh, hanh trinh, canh tinh
trinh luan » trinh luat, trinh quan, trinh han
luan dong » luan cong, quan dong, luan nong
dong cong » duong cong, dung cong, dang cong
cong tac » cong ty
tac nhan » tao nhan, cac nhan, dac nhan
nhan cau » nhanh cau, phan cau, nhan sau
hieu va » lieu va, hieu qua

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sang) or (hieu va)) - canh trinh luan dong cong tac nhan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (hieu va)) - canh trinh luan dong cong tac nhan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (hieu va)) - canh trinh luan dong cong tac nhan cau*.