Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
su sach » so sach, vu sach
cam luc » cam xuc, cau luc
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
ma hoi » mai hoi, xa hoi, ma hoa

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