Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
cau tren » dau tren, ca tren, cau treo
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
mai khoa » tai khoa, may khoa, dai khoa
thuc va » thuc vat, thuc dan, thuc day
cu tren » tu tren, dua tren
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
cam ky » cao ky, cac ky
tu cam » tu cham, tu cac, tu nam

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu cam ky nang ((ma hoa) OR (mai khoa)). hieu ve cham thuc va thanh vi ((cau tren) OR (cu tren))~.
• Adding a wildcard symbol may retrieve word variants: tu cam ky nang ((ma hoa) or (mai khoa)). hieu ve cham thuc va thanh vi ((cau tren) or (cu tren))*.