Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
cham tuc » nham thuc, pham thuc, tham thuc
su triet » su viet, ve triet
va thanh » gia thanh, ban thanh, va tinh
su tien » su kien, su hien, tu tieng
va cham » va chat, va tham
hieu va » lieu va, hieu qua
may hoi » may thoi, tay hoi, mai hoi
ky dang » ky nang, ky danh
ky mang » ky nang, ke mang, ky tang
tuc va » thuc va, truc va, tuc xa
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 mang) or (ky dang)) may hoi. hieu va cham tuc va thanh tai ((su triet) OR (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky mang) OR (ky dang)) may hoi. hieu va cham tuc va thanh tai ((su triet) OR (su tien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky mang) or (ky dang)) may hoi. hieu va cham tuc va thanh tai ((su triet) OR (su tien))".
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky mang) or (ky dang)) may hoi. hieu va cham tuc va thanh tai ((su triet) OR (su tien))*.