Perhaps you should try some spelling variations:
lieu nha » lieu khoa, lieu phap, lieu tham
van hanh » van thanh, ban hanh, van anh
xay hanh » day nhanh, day thanh, xanh hanh
nam thuc » nam thuoc, am thuc, nam thu
buu tre » cuu tre
sang ma » tang ma, nang ma, sang tao
lieu ha » lieu va, liem ha, lieu ma
ky sang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
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 ma hoi. ((lieu ha) OR (lieu nha)) nam thuc ((xay hanh) or (van hanh)) tai buu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky sang ma hoi. ((lieu ha) OR (lieu nha)) nam thuc ((xay hanh) OR (van hanh)) tai buu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky sang ma hoi. ((lieu ha) OR (lieu nha)) nam thuc ((xay hanh) or (van hanh)) tai buu tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky sang ma hoi. ((lieu ha) OR (lieu nha)) nam thuc ((xay hanh) or (van hanh)) tai buu tre*.