Perhaps you should try some spelling variations:
tu sach » thu sach, te sach, tu cach
ky tang » ky nang, ky dang, kho tang
va hanh » van hanh, va thanh, va danh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
ky lang » ky nang, ky dang, tay lang
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
ha hoi » hoa hoi, ha noi, xa hoi
xuc va » duc va, tuc va, luc va
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: ((tu sach) or (su sach)) ((ky lang) OR (ky tang)) ha hoi. hieu va cac xuc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ((ky lang) OR (ky tang)) ha hoi. hieu va cac xuc va hanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ((ky lang) OR (ky tang)) ha hoi. hieu va cac xuc va hanh vi cua tre*".