Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
hanh gian » thanh gian, thanh giang, manh giang
su triet » su viet, su tien, ve triet
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
ma hoi » mai hoi, xa hoi, ma hoa
va bao » va bai
bao bo » bac bo, ban bo, nao bo
bo va » bao va, do va, so va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang ma hoi. hieu va bao bo va hanh gian ((cua triet) OR (su triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang ma hoi. hieu va bao bo va hanh gian ((cua triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang ma hoi. hieu va bao bo va hanh gian ((cua triet) OR (su triet))*.