Perhaps you should try some spelling variations:
tu sach » thu sach, te sach, tu cach
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
lam xuc » cam xuc, lam duoc
thi van » thi lan, thi hanh, thi nang
cau tre » cau tren, cau treo, cau tra
mang xa » lang xa, mang may, dang xay
ty mang » ty xang, ty hang, tin mang
su sach » so sach, vu sach
xuc va » duc va, tuc va, luc va
di cau » da cau, diem cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) ty mang xa hoi. ((thien van) or (thi van)) lam xuc va hanh di cau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty mang xa hoi. ((thien van) OR (thi van)) lam xuc va hanh di cau tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ty mang xa hoi. ((thien van) or (thi van)) lam xuc va hanh di cau tre*.