Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
ban hanh » ban hang
cham cuu » cap cuu, chat cua
cham cuc » pham cuc, pham chuc, kham cuoc
su sach » so sach, vu sach
hanh de » hanh ve, hanh kem
tu cach » tu cac
de cua » le cua, te cua, dieu cua
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 cach) or (su sach)) ky nang x hoi. hieu van ((cham cuc) OR (cham cuu)) ban hanh de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky nang x hoi. hieu van ((cham cuc) OR (cham cuu)) ban hanh de cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (su sach)) ky nang x hoi. hieu van ((cham cuc) OR (cham cuu)) ban hanh de cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) ky nang x hoi. hieu van ((cham cuc) OR (cham cuu)) ban hanh de cua triet*.