Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu xanh » chieu sach, chieu sang, chieu tinh
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tac nhan » tao nhan, cac nhan, dac nhan
nhan cau » nhanh cau, phan cau, nhan sau
luan » quan, lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu xanh - hanh ((tran van) or (luan van)) thong cong tac nhan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh ((tran van) OR (luan van)) thong cong tac nhan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh ((tran van) or (luan van)) thong cong tac nhan cau*.