Perhaps you should try some spelling variations:
choi thuc » hoc thuc, hoi chuc
hanh luan » khanh luan, hang luan, hanh luat
dong cong » duong cong, dung cong, dang cong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
cho thue » cuc thue, cho he
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((cho chu) or (((cho thue) OR (choi thuc)))) van - hanh luan van dong cong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((cho chu) OR (((cho thue) OR (choi thuc)))) van - hanh luan van dong cong manh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((cho chu) or (((cho thue) OR (choi thuc)))) van - hanh luan van dong cong manh toan cau".
• Adding a wildcard symbol may retrieve word variants: ((cho chu) or (((cho thue) OR (choi thuc)))) van - hanh luan van dong cong manh toan cau*.