Perhaps you should try some spelling variations:
thien van » thi van
su sach » so sach, vu sach
cua tre » cuu tre, cua triet, dua tren
hanh de » hanh ve, hanh kem
va hanh » van hanh, va thanh, va danh
bac tuc » bac tu, bach tuoc, bac thua
van bac » van ban, van bao, van hac
so sanh » do sanh
v nang » va nang, vu nang, van nang
tuc va » thuc va, truc va, tuc xa
cua te » cua tu

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) OR (so sanh)) v nang x ho. thien van bac tuc va hanh de ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sanh)) v nang x ho. thien van bac tuc va hanh de ((cua tre) OR (cua te))~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) v nang x ho. thien van bac tuc va hanh de ((cua tre) OR (cua te))*.