Perhaps you should try some spelling variations:
cong ngang » cong quang, cong lang, cong nong
hanh manh » hanh mang, lanh manh, hoang manh
cong nhan » cong nhat, cong thanh, cong san
doc kieu » doc hieu, cac kieu, do kiet
doc viet » duoc viet, hoc viet, toc viet
manh cua » doanh cua, ban cua
cua tong » cua cong, cua dong, cua nong
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 viet)) tinh - hanh manh cua tong ((cong ngang) OR (cong nhan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc kieu) OR (doc viet)) tinh - hanh manh cua tong ((cong ngang) OR (cong nhan)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc kieu) or (doc viet)) tinh - hanh manh cua tong ((cong ngang) OR (cong nhan)) toan ban".
• Adding a wildcard symbol may retrieve word variants: ((doc kieu) or (doc viet)) tinh - hanh manh cua tong ((cong ngang) OR (cong nhan)) toan ban*.