Perhaps you should try some spelling variations:
doc sach » hoc sach, toc sach, nuoc sach
van hanh » van thanh, ban hanh, van anh
nang cho » nang chon, ngang cho, nang cao
cap nuoc » dat nuoc
cac nuoc » hoc nuoc, dat nuoc, cua nuoc
sach tu » sach thu, cach tu, sach ty
cua cau » cua cac, cua chu, cua cay
cac xuc » cam xuc, chat xuc, cac cuoc
hieu ve » hieu va, hieu van
cho hoc » co hoc, khoa hoc
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 cho hoc. hieu ve ((cac xuc) or (((cac nuoc) OR (cap nuoc)))) van hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach tu nang cho hoc. hieu ve ((cac xuc) OR (((cac nuoc) OR (cap nuoc)))) van hanh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach tu nang cho hoc. hieu ve ((cac xuc) or (((cac nuoc) OR (cap nuoc)))) van hanh vi cua cau*".