Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
day hanh » day nhanh, day thanh, dao hanh
kho tang » cao tang
thuc day » thuc dan, thuc vat
tai cuu » tai cuc, tai cua, thai cua
ky tang » ky nang, ky dang, ky trong
va nam » van nam, ha nam, va nay
ma hoi » mai hoi, xa hoi, ma hoa
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ((ky tang) or (kho tang)) ma hoi. lieu va nam thuc day hanh ((tai cuu) or (tai buu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky tang) OR (kho tang)) ma hoi. lieu va nam thuc day hanh ((tai cuu) OR (tai buu)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky tang) or (kho tang)) ma hoi. lieu va nam thuc day hanh ((tai cuu) or (tai buu)) tre*.