Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
vu sach » vu bach, su sach, vu khach
lang xa » lang ha, dang xay, lang van
qua cac » cua cac
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va thanh, va danh
su hien » su kien, su tien, thu hien
sach o » sach lo, sac o, sach y
o lang » hoa lang, hoi lang
xuc va » duc va, tuc va, luc va

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: vu sach o lang xa hoi. hieu qua cac xuc va hanh vi ((su triet) OR (su hien))~.
• Adding a wildcard symbol may retrieve word variants: vu sach o lang xa hoi. hieu qua cac xuc va hanh vi ((su triet) or (su hien))*.