Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
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
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
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: ((thu sach) or (su sach)) ky lang xa hoi. hieu va ((cac xuc) OR (chat xuc)) van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (su sach)) ky lang xa hoi. hieu va ((cac xuc) OR (chat xuc)) van hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (su sach)) ky lang xa hoi. hieu va ((cac xuc) OR (chat xuc)) van hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (su sach)) ky lang xa hoi. hieu va ((cac xuc) OR (chat xuc)) van hanh vi cua tre*.