Perhaps you should try some spelling variations:
doanh thai » doanh tai, doanh thanh, doanh nhan
cua triet » cua viet, su triet, va triet
gia doanh » gia thanh, gia dinh, giai doan
thai cua » than cua, tai cuc, tri cua
duc gia » quoc gia
cac duc » cac du, cao duc, cac dac
su sach » so sach
vang xa » lang xa, mang xa, ang xa
ly vang » ly hang, ly van, ly quang
vu sach » vu bach, vu khach
hieu va » hieu qua

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) or (vu sach)) ly vang xa hoi. ((hieu va) OR (lieu va)) cac duc gia doanh thai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ly vang xa hoi. ((hieu va) OR (lieu va)) cac duc gia doanh thai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ly vang xa hoi. ((hieu va) OR (lieu va)) cac duc gia doanh thai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ly vang xa hoi. ((hieu va) OR (lieu va)) cac duc gia doanh thai cua triet*.