Perhaps you should try some spelling variations:
nam thuoc » nam thu, nha thuoc, cay thuoc
hanh tai » thanh tai, hang tai, han tai
xay hanh » day nhanh, day thanh, xanh hanh
nam thuc » am thuc, nam thu, nam tu
tai cuu » tai cuc, tai buu, tai cua
cuu tre » cua tre, cau tren, cau treo
lieu ha » lieu nha, lieu va, liem ha
ky dang » ky nang, ky danh
ky sang » ky nang, ky tang, duy sang
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 sang) or (ky dang)) xa hoi. lieu ha ((nam thuoc) OR (nam thuc)) xay hanh tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky sang) OR (ky dang)) xa hoi. lieu ha ((nam thuoc) OR (nam thuc)) xay hanh tai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky sang) or (ky dang)) xa hoi. lieu ha ((nam thuoc) OR (nam thuc)) xay hanh tai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky sang) or (ky dang)) xa hoi. lieu ha ((nam thuoc) OR (nam thuc)) xay hanh tai cuu tre*.