Perhaps you should try some spelling variations:
danh sai » dung sai, danh bat, danh dau
cham duc » pham duc, cham soc, pham duy
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
va danh » va dinh, va dan, va hanh
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
may hoi » may thoi, tay hoi, mai hoi
ky mang » ky nang, ke mang, ky dang
te sach » toc sach
te sac » te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sac) OR (te sach)) ky mang may hoi. hieu ve cham duc va danh sai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te sach)) ky mang may hoi. hieu ve cham duc va danh sai ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) OR (te sach)) ky mang may hoi. hieu ve cham duc va danh sai ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((te sac) OR (te sach)) ky mang may hoi. hieu ve cham duc va danh sai ((cua tre) or (cuu tre))*.