Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
may thoi » gay thoi, may thi, tay thoi
hoc duoc » hoc nuoc, hoa duoc, hoc dung
cua tre » cua te, cuu tre, cua triet
va tinh » may tinh
hieu ve » hieu va
ky mang » ky nang, ke mang, ky dang
sac ky » cac ky, sai ky
va dan » ca dan, va dao, va dau
vi cua » vai cua, di cua
vu sac » vu sach, vu san, va sac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky mang may thoi. ((hieu ve) OR (hieu van)) hoc duoc ((va dan) OR (va tinh)) vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky mang may thoi. ((hieu ve) OR (hieu van)) hoc duoc ((va dan) or (va tinh)) vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: vu sac ky mang may thoi. ((hieu ve) OR (hieu van)) hoc duoc ((va dan) or (va tinh)) vi cua tre*.