Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van dung » van dong, xay dung, tin dung
nam thuc » nam thuoc, nam thu, nam tu
cay phoi » cap phoi, tay hoi, cay cho
dang cay » dang xay, dang ca, dang cac
hieu ve » hieu va, hieu van
ky dang » ky nang, ky danh
dung ca » dung cua, dung cac, dung cam
cua tre » cua te, cuu tre, dua tren
sai ky » sac ky
so sai » so dai, so hai, do sai

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sai ky dang cay phoi. hieu ve ((nam thuc) or (am thuc)) van dung ca ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sai ky dang cay phoi. hieu ve ((nam thuc) OR (am thuc)) van dung ca ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sai ky dang cay phoi. hieu ve ((nam thuc) or (am thuc)) van dung ca ((cua tre) OR (cua triet))*".