Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
cua viet » ca viet, hoa viet, cua dieu
van hanh » van thanh, ban hanh, van anh
cam truc » cau truc, nam truc, lam truoc
dang xay » dang van, van xay
xay hoi » xa hoi, tay hoi, cay phoi
hieu va » lieu va, hieu qua
va hanh » va thanh, va danh, ban hanh
ky dang » ky nang, ky danh
va cam » va cham, va cac, va cao
san ky » sang ky, van ky, dan ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat san ky dang xay hoi. hieu va cam truc ((va hanh) OR (van hanh)) di ((cua viet) OR (cua vat))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat san ky dang xay hoi. hieu va cam truc ((va hanh) OR (van hanh)) di ((cua viet) OR (cua vat))".
• Adding a wildcard symbol may retrieve word variants: thuat san ky dang xay hoi. hieu va cam truc ((va hanh) OR (van hanh)) di ((cua viet) OR (cua vat))*.