Perhaps you should try some spelling variations:
dang cay » dang xay, dang ca, dang cac
cay phoi » cap phoi, tay hoi, cay cho
tinh vai » tinh va, tinh hai, tinh bai
so sach » so sanh, bo sach, co sach
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
sach ky » sac ky, sach y, sach ty
ve nuoc » ve duoc
hieu ve » hieu va, hieu van
ky dang » ky nang, ky danh
loc va » hoc va
luc va » duc va, tuc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky dang cay phoi. hieu ve nuoc ((luc va) or (loc va)) tinh vai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky dang cay phoi. hieu ve nuoc ((luc va) OR (loc va)) tinh vai ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: so sach ky dang cay phoi. hieu ve nuoc ((luc va) or (loc va)) tinh vai ((cua tre) or (cuu tre))*.