Perhaps you should try some spelling variations:
bach tuoc » sach duoc, sach nuoc
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
hanh tri » thanh tri, hanh tai, hanh trinh
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
bac tuc » bac tu, bac thua
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma

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 ky nang xa hoi. hieu va ((bac tuc) or (bach tuoc)) va hanh tri ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu va ((bac tuc) OR (bach tuoc)) va hanh tri ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu va ((bac tuc) or (bach tuoc)) va hanh tri ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu va ((bac tuc) or (bach tuoc)) va hanh tri ((cua triet) OR (va triet))*.