Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
cao tren » ca tren, co tren, cao thien
hanh tai » thanh tai, hang tai, han tai
nam thuc » nam thuoc, am thuc, nam thu
lieu ha » lieu nha, lieu va, liem ha
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, me hoi
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 nang ((ma hoi) or (ma hoa)). lieu ha nam thuc va hanh tai ((cao tren) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((ma hoi) OR (ma hoa)). lieu ha nam thuc va hanh tai ((cao tren) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((ma hoi) or (ma hoa)). lieu ha nam thuc va hanh tai ((cao tren) or (cau tren))*.