Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
nam thuc » nam thuoc, am thuc, nam tu
va thanh » gia thanh, ban thanh, va tinh
thanh va » thanh van, hanh va, thanh ha
cau tren » cu tren, dau tren, ca tren
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
su sac » su sach, su cac, su xac
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: su sac ky dang xay hoi. lieu va ((nam thuc) or (nam thu)) va thanh va ((cau tren) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky dang xay hoi. lieu va ((nam thuc) OR (nam thu)) va thanh va ((cau tren) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sac ky dang xay hoi. lieu va ((nam thuc) or (nam thu)) va thanh va ((cau tren) or (cua triet))*.