Perhaps you should try some spelling variations:
trung phai » trung hai, trung phat, truong phan
trung phan » trung thanh, trung ha, dung phan
nhung cong » dung cong, thong cong, hang cong
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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

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