Perhaps you should try some spelling variations:
vat thanh » dat thanh, gat thanh, tat thanh
thanh tai » thanh hai, thanh toan, doanh tai
cua triet » cua viet, su triet, va triet
su sach » so sach
vu sach » vu bach, vu khach
nang xa » nang x, lang xa, nang ma
van cac » van cau, van bac, dan cac
van hac » van hoc, van ha, van hai
tai cua » thai cua, tai cuc, tri cua
y nang » ky nang, ly nang, v nang

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

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