Perhaps you should try some spelling variations:
cau theo » cau tao
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va danh, ban hanh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
tang ho » tang cho, tung ho, tang ha
ky tang » ky nang, ky dang, kho tang
ho hoi » hoc hoi, hoa hoi, hoi hoi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky tang ho hoi. hieu va cac xuc ((va hanh) or (va thanh)) hai ((cau theo) OR (cau thi))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky tang ho hoi. hieu va cac xuc ((va hanh) OR (va thanh)) hai ((cau theo) OR (cau thi)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky tang ho hoi. hieu va cac xuc ((va hanh) or (va thanh)) hai ((cau theo) OR (cau thi))".
• Adding a wildcard symbol may retrieve word variants: su sach ky tang ho hoi. hieu va cac xuc ((va hanh) or (va thanh)) hai ((cau theo) OR (cau thi))*.