Perhaps you should try some spelling variations:
thuoc ban » thuoc tan, thuoc dang, thu ban
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
thuc ban » thuc dan, thu ban, thuc van
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao

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