Perhaps you should try some spelling variations:
thanh lam » thanh lap, hanh lam, thanh nam
cua viet » ca viet, hoa viet, cua vat
lam cua » nam cua, lam chat
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
luc va » tuc va, loc va
s_ hai » su hai, so hai
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang ((_ hai) or (s_ hai)). hieu ve cam ((duc va) or (luc va)) thanh lam cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ((_ hai) OR (s_ hai)). hieu ve cam ((duc va) OR (luc va)) thanh lam cua viet.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ((_ hai) or (s_ hai)). hieu ve cam ((duc va) or (luc va)) thanh lam cua viet*.