Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh oai
thanh dat » thanh san, thanh hai, thanh van
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
duoc tan » duc tan, duoc ban, duoc dan
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va, hieu van
te san » te ban, ke san, tu san
san ky » sang ky, van ky, dan ky
ve tao » ve bao, de tao, ve tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te san ky dang xay hoi. hieu ve tao duoc tan ((thanh dai) or (thanh dat)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te san ky dang xay hoi. hieu ve tao duoc tan ((thanh dai) OR (thanh dat)) cua triet.
• Adding a wildcard symbol may retrieve word variants: te san ky dang xay hoi. hieu ve tao duoc tan ((thanh dai) or (thanh dat)) cua triet*.