Perhaps you should try some spelling variations:
thi nang » thi cong, ki nang, thi hanh
cham tuc » nham thuc, pham thuc, tham thuc
hanh lai » hanh lam, hanh tai, thanh lap
va triet » va thiet, va trien, ve triet
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
tuc va » thuc va, truc va, tuc xa
lai va » loai va, mai va, dai va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) thi nang x hoi. hieu ve cham tuc va hanh lai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) thi nang x hoi. hieu ve cham tuc va hanh lai va triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) thi nang x hoi. hieu ve cham tuc va hanh lai va triet*.