Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
day thanh » dao thanh, dat thanh, da thanh
thanh lap » thanh san, phan lap, thanh hai
sach dao » lanh dao
dao lang » dao khang, dao quang, dao trang
thuc day » thuc dan, thuc vat
su triet » su viet, su tien, ve triet
cua viet » ca viet, hoa viet, cua vat
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham

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 dao lang xa hoi. hieu ve cham thuc day thanh lap ((su triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach dao lang xa hoi. hieu ve cham thuc day thanh lap ((su triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: su sach dao lang xa hoi. hieu ve cham thuc day thanh lap ((su triet) or (cua viet))*.