Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
dang xay » dang van, van xay
va thanh » gia thanh, ban thanh, va tinh
cau tren » cu tren, dau tren, ca tren
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
nam tuc » nam thuc, nam truc, nam tu
va hanh » van hanh, va danh, ban hanh
va nam » van nam, ha nam, va nay
vi cau » va cau, ve cau, di cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky dang xay hoi. lieu va nam tuc ((va hanh) OR (va thanh)) vi cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky dang xay hoi. lieu va nam tuc ((va hanh) OR (va thanh)) vi cau tren".
• Adding a wildcard symbol may retrieve word variants: thuat sach ky dang xay hoi. lieu va nam tuc ((va hanh) OR (va thanh)) vi cau tren*.