Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tinh yen » tinh yeu, tinh dien, tinh son
toc sach » hoc sach, doc sach, thuoc sach
xay hoi » xa hoi, cay phoi, gay thoi
tay hoi » tay ho, tao hoi, tay thai
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
cam tuc » cam xuc, cam tu, nam thuc
tinh ve » trinh ve, tinh ven, dinh ve
ky dang » ky nang, ky danh
tuc va » thuc va, truc va, tuc xa
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: toc sach ky dang ((xay hoi) or (tay hoi)). hieu ve cam tuc va ((tinh ve) or (tinh yen)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky dang ((xay hoi) OR (tay hoi)). hieu ve cam tuc va ((tinh ve) OR (tinh yen)) cua triet.
• Adding a wildcard symbol may retrieve word variants: toc sach ky dang ((xay hoi) or (tay hoi)). hieu ve cam tuc va ((tinh ve) or (tinh yen)) cua triet*.