Perhaps you should try some spelling variations:
xanh hanh » danh thanh, ban hanh, van hanh
nam thuc » nam thuoc, am thuc, nam thu
xay hanh » day nhanh, day thanh, xuan hanh
lieu ha » lieu nha, lieu va, liem ha
buu tre » cuu tre
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
ma hoi » mai hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky nang ((ma hoi) or (xa hoi)). lieu ha nam thuc ((xay hanh) OR (xanh hanh)) tai buu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang ((ma hoi) OR (xa hoi)). lieu ha nam thuc ((xay hanh) OR (xanh hanh)) tai buu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky nang ((ma hoi) or (xa hoi)). lieu ha nam thuc ((xay hanh) OR (xanh hanh)) tai buu tre".
• Adding a wildcard symbol may retrieve word variants: tu san ky nang ((ma hoi) or (xa hoi)). lieu ha nam thuc ((xay hanh) OR (xanh hanh)) tai buu tre*.