Perhaps you should try some spelling variations:
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
hang cong » dang cong, hang nong, bang cong
tinh cua » trinh cua, sinh cua, tinh chat
cua hang » cua dang, cua nhung, cua cong
cong san » cong tac
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
de hieu » doc hieu, dao hieu, dat hieu
he dieu » hoc dieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((de hieu) or (he dieu)) tang - nhanh tinh cua hang cong san ((toan cau) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((de hieu) OR (he dieu)) tang - nhanh tinh cua hang cong san ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((de hieu) or (he dieu)) tang - nhanh tinh cua hang cong san ((toan cau) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ((de hieu) or (he dieu)) tang - nhanh tinh cua hang cong san ((toan cau) OR (toan tap))*.