Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
hang tai » hang va, dung tai
xa thanh » va thanh, ha thanh, ta thanh
lieu nha » lieu khoa, lieu phap, lieu tham
cuu tre » cua tre, cau tren, cau treo
tai cuu » tai cuc, tai buu, tai cua
xa hanh » xa khanh, va hanh, da hanh
tai hoi » tai khoi, dai hoi, tai hai
lieu ha » lieu va, liem ha, lieu ma
ky hang » ky nang, ly hang, ky dang
sac ky » cac ky, sai ky
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 hang tai hoi. ((lieu ha) or (lieu nha)) nam thuc ((xa hanh) OR (xa thanh)) tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky hang tai hoi. ((lieu ha) OR (lieu nha)) nam thuc ((xa hanh) OR (xa thanh)) tai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky hang tai hoi. ((lieu ha) or (lieu nha)) nam thuc ((xa hanh) OR (xa thanh)) tai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky hang tai hoi. ((lieu ha) or (lieu nha)) nam thuc ((xa hanh) OR (xa thanh)) tai cuu tre*.