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

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

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