Perhaps you should try some spelling variations:
ngang toan » nganh toan, dang toan, quang toan
hanh manh » hanh mang, lanh manh, hoang manh
tong cong » cong cong, dung cong, dang cong
doc kieu » cac kieu, doc viet, do kiet
doc hieu » toc thieu, hoc thieu, hoc hien
manh cua » doanh cua, ban cua
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc kieu) OR (doc hieu)) tinh - hanh manh cua ((tong cong) or (trong cong)) ngang toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc kieu) OR (doc hieu)) tinh - hanh manh cua ((tong cong) OR (trong cong)) ngang toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc kieu) OR (doc hieu)) tinh - hanh manh cua ((tong cong) or (trong cong)) ngang toan ban".
• Adding a wildcard symbol may retrieve word variants: ((doc kieu) OR (doc hieu)) tinh - hanh manh cua ((tong cong) or (trong cong)) ngang toan ban*.