Perhaps you should try some spelling variations:
thanh cua » tranh cua, hanh cua, thanh cha
va triet » va thiet, va trien, ve triet
than cua » nhan cua, thai cua, ban cua
cam loc » cam lo
loc ban » lo ban, hoc ban, coc ban
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
hieu ve » hieu van
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 ve) or (hieu va)) cam loc ban ((thanh cua) OR (than cua)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. ((hieu ve) OR (hieu va)) cam loc ban ((thanh cua) OR (than cua)) va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. ((hieu ve) or (hieu va)) cam loc ban ((thanh cua) OR (than cua)) va triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. ((hieu ve) or (hieu va)) cam loc ban ((thanh cua) OR (than cua)) va triet*.