Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
nang mai » nang ma, nang tai, lang mai
vat hanh » vat thanh, van hanh, va hanh
so sinh » so sanh, so tinh, cho sinh
mai hoi » mai khoi, dai hoi, lai hoi
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
va viet » hoa viet, san viet, mai viet
sinh y » sinh ly
y nang » ky nang, ly nang, v nang
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sinh y nang mai hoi. hieu vu cham thuc vat hanh vi va viet~.
• Adding a wildcard symbol may retrieve word variants: so sinh y nang mai hoi. hieu vu cham thuc vat hanh vi va viet*.