Perhaps you should try some spelling variations:
dat khanh » van khanh, duy khanh
khanh tai » thanh tai, hanh tai, nhanh thai
nam thuc » nam thuoc, am thuc, nam thu
thuc dat » thuc vat, thuc dan, thuc day
cau tren » cu tren, dau tren, ca tren
tang ma » mang may, tang van
nang ma » sang ma, nang cao, mang may
lieu ha » lieu nha, lieu va, liem ha
tai cau » tai cac, tai cao
tu sac » tu sach, tu san, tu bac

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) OR (tu cac)) ky ((nang ma) or (tang ma)) hoi. lieu ha nam thuc dat khanh tai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu cac)) ky ((nang ma) OR (tang ma)) hoi. lieu ha nam thuc dat khanh tai cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) OR (tu cac)) ky ((nang ma) or (tang ma)) hoi. lieu ha nam thuc dat khanh tai cau tren".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) OR (tu cac)) ky ((nang ma) or (tang ma)) hoi. lieu ha nam thuc dat khanh tai cau tren*.