Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
danh di » danh du, xanh di, danh dien
cua tre » cua te, cuu tre, dua tren
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
va dat » va dao, va dau, va dap
nuoc » quoc, duoc, ngoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky nang ((mai hoi) or (xa hoi)). hieu va dat nuoc va danh di ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang ((mai hoi) OR (xa hoi)). hieu va dat nuoc va danh di ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky nang ((mai hoi) or (xa hoi)). hieu va dat nuoc va danh di ((cua tre) OR (cua triet))*".