Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
nhan luoc » nhan luc, nhan cuoc, nhan duoc
su triet » su viet, su tien, ve triet
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
luoc van » luoc can, luoc va, luc van
van nhan » van phan, van thanh, danh nhan
sach ky » sac ky, sach ty, sach kem
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) OR (sach y)) nang x hoi. hieu van nhan luoc van hanh vi ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach y)) nang x hoi. hieu van nhan luoc van hanh vi ((cua triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach y)) nang x hoi. hieu van nhan luoc van hanh vi ((cua triet) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sach y)) nang x hoi. hieu van nhan luoc van hanh vi ((cua triet) or (su triet))*.