Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
thanh de » hanh de, thanh ve, thanh do
cau tren » cu tren, dau tren, ca tren
thi van » thi lan, thi hanh, thi nang
sach ky » sac ky, sach y, sach ty
cuu tre » cua tre, cau treo
lam xuc » cam xuc, lam duoc
xuc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang x hoi. ((thien van) or (thi van)) lam xuc va thanh de ((cuu tre) OR (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang x hoi. ((thien van) OR (thi van)) lam xuc va thanh de ((cuu tre) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang x hoi. ((thien van) or (thi van)) lam xuc va thanh de ((cuu tre) OR (cau tren))".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang x hoi. ((thien van) or (thi van)) lam xuc va thanh de ((cuu tre) OR (cau tren))*.