Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
sach tranh » canh tranh
tranh hang » trinh han, tran hoang, tran hong
hang thai » hoang thai, hang tai, hang hai
cong tac » cong ty
te sach » toc sach
su cac » su cao, su can, eu cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((su cac) OR (tu cac)) nganh cong tac đong luc ) or ( te sach tranh hang thai đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((su cac) OR (tu cac)) nganh cong tac đong luc ) OR ( te sach tranh hang thai đong luc )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((su cac) OR (tu cac)) nganh cong tac đong luc ) or ( te sach tranh hang thai đong luc ))".
• Adding a wildcard symbol may retrieve word variants: (( ((su cac) OR (tu cac)) nganh cong tac đong luc ) or ( te sach tranh hang thai đong luc ))*.