Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
chat xuc » chat huu, cam xuc, chao xu
ban hang » ngan hang
van hanh » van thanh, ban hanh, van anh
qua chat » qua nhat, qua cham, luan chat
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
cuu tre » cua tre, cau treo
vu sach » vu bach, su sach, vu khach

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky lang xa hoi. hieu qua chat xuc ((van hanh) or (ban hang)) dinh ((cuu tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky lang xa hoi. hieu qua chat xuc ((van hanh) OR (ban hang)) dinh ((cuu tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: vu sach ky lang xa hoi. hieu qua chat xuc ((van hanh) or (ban hang)) dinh ((cuu tre) or (cau tren))*.