Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh vai » thanh hai, thanh van, thanh tai
cua triet » su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
cua viet » ca viet, hoa viet, cua vat
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
duc van » duc va, duc tan, duc manh
ve cam » ve cham, ve cac, va cam

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((nang x) OR (lang xa)) hoi. hieu ve cam duc van thanh vai ((cua triet) OR (cua viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y ((nang x) or (lang xa)) hoi. hieu ve cam duc van thanh vai ((cua triet) OR (cua viet))~".
• Adding a wildcard symbol may retrieve word variants: thu sach y ((nang x) or (lang xa)) hoi. hieu ve cam duc van thanh vai ((cua triet) OR (cua viet))*.