Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
cham thuc » nham thuc, pham thuc, tham thuc
su triet » su viet, su tien, ve triet
vanh dai » van dai, lanh dao, van dao
vanh tai » van tai, hanh tai, anh tai
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
thuc va » thuc vat, thuc dan, thuc day
va cham » va chat, va tham
hieu va » lieu va, hieu qua
danh xa » danh ca, dinh xa, canh xa
ky danh » ky anh, ky dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky danh xa hoi. hieu va cham thuc va ((vanh dai) or (vanh tai)) ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky danh xa hoi. hieu va cham thuc va ((vanh dai) OR (vanh tai)) ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ky danh xa hoi. hieu va cham thuc va ((vanh dai) or (vanh tai)) ((cua triet) or (su triet))*.