Perhaps you should try some spelling variations:
cay phoi » cap phoi, cay cho, gap phoi
cuu tre » cua tre, cau tren, cau treo
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
ky dang » ky nang, ky danh
tay hoi » tay ho, tao hoi, tay thai
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
vi cuu » vi luu, vinh cuu
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cac) or (su sach)) ky dang ((cay phoi) OR (tay hoi)). hieu va cac xuc va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (su sach)) ky dang ((cay phoi) OR (tay hoi)). hieu va cac xuc va hanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cac) or (su sach)) ky dang ((cay phoi) OR (tay hoi)). hieu va cac xuc va hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (su sach)) ky dang ((cay phoi) OR (tay hoi)). hieu va cac xuc va hanh vi cuu tre*.