Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
trinh toan » tinh toan, thanh toan, trinh quan
nhung cong » dung cong, thong cong, hang cong
trinh han » trinh quan
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu xanh - canh ((trinh toan) or (trinh han)) nhung cong tac phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - canh ((trinh toan) OR (trinh han)) nhung cong tac phan cau*.