Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban tinh » ban thanh, quan tinh, ban hanh
cham cuc » cham cuu, pham cuc, pham chuc
cua tre » cua te, cuu tre, dua tren
tinh da » tinh va, tinh gia, tinh lao
cuc ban » cua ban, cac ban, cuu ban
va cham » va chat, va tham
hieu va » lieu va, hieu qua
dong ha » dong hoa, dong va, dong hoc
dang xa » dang xay, lang xa, dang ha
sac ky » cac ky, sai ky
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky ((dang xa) or (dong ha)) hoi. hieu va cham cuc ban tinh da ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((dang xa) OR (dong ha)) hoi. hieu va cham cuc ban tinh da ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((dang xa) or (dong ha)) hoi. hieu va cham cuc ban tinh da ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((dang xa) or (dong ha)) hoi. hieu va cham cuc ban tinh da ((cua tre) OR (cua triet))*.