Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh hai » thanh hai, nhanh hai, hang hai
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
mang xa » lang xa, mang may, dang xay
ty mang » ty xang, ty hang, tin mang
ve cham » va cham, ve chat, vu cham
xuc va » duc va, tuc va, luc va
ve cam » ve cac, va cam, ve cai

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: tu sach ty mang xa hoi. hieu ((ve cam) OR (ve cham)) xuc va hanh hai ((cua tre) OR (su triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty mang xa hoi. hieu ((ve cam) OR (ve cham)) xuc va hanh hai ((cua tre) or (su triet))~".
• Adding a wildcard symbol may retrieve word variants: tu sach ty mang xa hoi. hieu ((ve cam) OR (ve cham)) xuc va hanh hai ((cua tre) or (su triet))*.