Perhaps you should try some spelling variations:
thanh tho » thanh thao, thanh pho, thanh ho
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
su triet » su viet, su tien, ve triet
van hai » van ha, van chat, van hanh
hai xuc » hai cuc, hai xu, chat xuc
xuc ban » duc ban, cuc ban, quoc ban
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
co hoi » co hoc, co loi
tho su » thoi su, tho nu, thong su
o hoi » o hoc, o hai, o hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang ((o hoi) or (co hoi)). hieu van hai xuc ban thanh tho su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang ((o hoi) OR (co hoi)). hieu van hai xuc ban thanh tho su triet.
• Adding a wildcard symbol may retrieve word variants: te sac ky nang ((o hoi) or (co hoi)). hieu van hai xuc ban thanh tho su triet*.