Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
dang xay » dang van, van xay
sach ky » sac ky, sach y, sach ty
hanh va » hang va, hanh vi
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
ve am » va am

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky dang xay hoi. hieu ve am ((hoc dan) or (thuc vat)) hanh va ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky dang xay hoi. hieu ve am ((hoc dan) OR (thuc vat)) hanh va ((cua triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky dang xay hoi. hieu ve am ((hoc dan) or (thuc vat)) hanh va ((cua triet) OR (su triet))*".