Perhaps you should try some spelling variations:
doc sach » hoc sach, toc sach, nuoc sach
van hanh » van thanh, ban hanh, van anh
tra nang » thi nang, kha nang, da nang
chat xuc » chat huu, cam xuc, chao xu
sach tra » sach tranh, sach tham, sach tren
cac cuoc » ca cuoc, cac quoc, can cuoc
hanh vai » hanh vi, hanh va, hanh tai
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach tra nang cao hoi. hieu ve ((((chat xuc) or (cac cuoc))) or (cac nuoc)) van hanh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach tra nang cao hoi. hieu ve ((((chat xuc) OR (cac cuoc))) OR (cac nuoc)) van hanh vai cua tu.
• Adding a wildcard symbol may retrieve word variants: doc sach tra nang cao hoi. hieu ve ((((chat xuc) or (cac cuoc))) or (cac nuoc)) van hanh vai cua tu*.