Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
van thanh » ban thanh, van tuan
hoc sach » hoc sinh, hoc cac, hoc anh
va triet » va thiet, va trien, ve triet
su triet » su viet, su tien, ve triet
kho tang » cao tang
hieu ve » hieu va, hieu van
luc van » luoc van, luu van, duc van
ky dang » ky nang, ky danh
cam luc » cam xuc, cau luc
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: hoc sach ((kho tang) or (ky dang)) xa hoi. hieu ve cam luc van thanh vai ((va triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ((kho tang) OR (ky dang)) xa hoi. hieu ve cam luc van thanh vai ((va triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: hoc sach ((kho tang) or (ky dang)) xa hoi. hieu ve cam luc van thanh vai ((va triet) or (su triet))*.