Perhaps you should try some spelling variations:
danh xay » dang xay, manh xay, anh xay
hieu van » hieu va, thien van, lieu va
van chat » cao chat
nam thuc » nam thuoc, am thuc, nam thu
van hanh » van thanh, ban hanh, van anh
ky danh » ky anh, ky dang
xay hoi » xa hoi, tay hoi, cay phoi
nam luc » nang luc, nhan luc, nam duoc
van cau » van dau, van hau, toan cau
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

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 danh xay hoi. hieu van ((nam luc) or (nam thuc)) van hanh ((van cau) OR (van chat)) treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky danh xay hoi. hieu van ((nam luc) OR (nam thuc)) van hanh ((van cau) OR (van chat)) treo*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky danh xay hoi. hieu van ((nam luc) or (nam thuc)) van hanh ((van cau) OR (van chat)) treo*".