Perhaps you should try some spelling variations:
ve triet » va trien, su triet
sach ky » sac ky, sach y, sach ty
thuc va » thuc vat, thuc dan, thuc day
truc va » thuc vat, trung va
su sach » so sach, vu sach
qua cau » quan cau, qua cac, qua cai
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
qua ca » qua cac, qua cua, qua cai
vi ve » va ve, gi ve, ve ve

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: su sach ky lang xa hoi. hieu ((qua cau) OR (qua ca)) ((truc va) OR (thuc va)) hanh vi ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky lang xa hoi. hieu ((qua cau) or (qua ca)) ((truc va) OR (thuc va)) hanh vi ve triet~".
• Adding a wildcard symbol may retrieve word variants: su sach ky lang xa hoi. hieu ((qua cau) or (qua ca)) ((truc va) OR (thuc va)) hanh vi ve triet*.