Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
vu khac » vu kham, vu khanh, bui khac
nang ma » tang ma, sang ma, nang cao
ve cham » ve chat, vu cham, ve chim
va cham » va chat, va tham
soc van » hoc van, oc van, sac van
ca viet » va viet, co viet, hoa viet
vi ca » vit ca, li ca, va ca

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) or (vu khac)) ky nang ma hoa. hieu ((ve cham) OR (va cham)) soc van thanh vi ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu khac)) ky nang ma hoa. hieu ((ve cham) OR (va cham)) soc van thanh vi ca viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu khac)) ky nang ma hoa. hieu ((ve cham) OR (va cham)) soc van thanh vi ca viet*".