Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban manh » ban hanh, van manh, ban mach
manh hai » lanh hai, minh hai, thanh hai
vu sach » vu bach, su sach, vu khach
ky dang » ky danh
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, dua tren

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((ky dang) OR (ky nang)) xay hoi. hieu ve pham duc ban manh hai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ky dang) OR (ky nang)) xay hoi. hieu ve pham duc ban manh hai ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((ky dang) OR (ky nang)) xay hoi. hieu ve pham duc ban manh hai ((cua tre) or (cua triet))*".