Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
sach thi » sach thu, sach tai, sach thieu
thi hang » thi hanh, thi nang, thi hong
van hanh » van thanh, ban hanh, van anh
chat xuc » chat huu, cam xuc, chao xu
cac xuc » cam xuc, cac nuoc, cac cuoc
hieu va » lieu va, hieu qua
hieu ve » hieu van
hang co » hang cho, hang ca, nang co
cua cau » cua cac, cua chu, cua cay
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: toc sach thi hang co hoc. ((hieu ve) OR (hieu va)) ((cac xuc) or (chat xuc)) van hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach thi hang co hoc. ((hieu ve) OR (hieu va)) ((cac xuc) OR (chat xuc)) van hanh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach thi hang co hoc. ((hieu ve) OR (hieu va)) ((cac xuc) or (chat xuc)) van hanh vi cua cau*".