Perhaps you should try some spelling variations:
doc sach » hoc sach, toc sach, nuoc sach
van hanh » van thanh, ban hanh, van anh
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
chat xuc » chat huu, cam xuc, chao xu
sach tu » sach thu, cach tu, sach ty
cua cau » cua cac, cua chu, cua cay
cac xuc » cam xuc, cac cuoc, cac quoc
hieu ve » hieu va, hieu van
nang co » nang cao, nang doc, nang noi
tu nang » tru nang, tu nong, tu nano
vi cua » vai cua, di cua

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 tu nang co hoc. hieu ve ((((cac xuc) OR (chat xuc))) or (cac nuoc)) van hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach tu nang co hoc. hieu ve ((((cac xuc) OR (chat xuc))) OR (cac nuoc)) van hanh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach tu nang co hoc. hieu ve ((((cac xuc) OR (chat xuc))) or (cac nuoc)) van hanh vi cua cau*".