Perhaps you should try some spelling variations:
nhanh thang » nhanh quang, hanh trang, nhanh chong
nhanh thanh » phan thanh, nhanh tinh
theo chieu » theo tieu, ho chieu, thi chieu
dang cong » dung cong
theo chu » cho chu, chao chu, theo yeu
van dang » van dong, van dung, van nang
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan tap » phan lap, han tap, pha tap

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) OR (theo chu)) tinh - ((nhanh thang) or (nhanh thanh)) van dang cong tan phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) tinh - ((nhanh thang) OR (nhanh thanh)) van dang cong tan phan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo chu)) tinh - ((nhanh thang) or (nhanh thanh)) van dang cong tan phan tap".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (theo chu)) tinh - ((nhanh thang) or (nhanh thanh)) van dang cong tan phan tap*.