Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
qua cham » qua hai, qua cac, va cham
cham luc » cham soc, nhan luc, cham cuu
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
dang xa » dang xay, lang xa, dang ha
va hanh » va thanh, va danh, ban hanh
y dang » ky dang, 2 dang, _ dang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y dang xa hoi. hieu qua cham luc ((va hanh) OR (van hanh)) vi ((cua triet) OR (su triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y dang xa hoi. hieu qua cham luc ((va hanh) or (van hanh)) vi ((cua triet) OR (su triet))~".
• Adding a wildcard symbol may retrieve word variants: su sach y dang xa hoi. hieu qua cham luc ((va hanh) or (van hanh)) vi ((cua triet) OR (su triet))*.