Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
cau tren » cu tren, dau tren, ca tren
dang xay » dang van, van xay
thanh va » thanh van, hanh va, thanh ha
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nam duc » nam duoc, pham duc, nam buoc
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky dang xay hoi. lieu va ((nam duc) or (nam thuc)) va thanh va ((cau tren) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky dang xay hoi. lieu va ((nam duc) OR (nam thuc)) va thanh va ((cau tren) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ky dang xay hoi. lieu va ((nam duc) or (nam thuc)) va thanh va ((cau tren) or (cua triet))*.