Perhaps you should try some spelling variations:
thanh trung » thanh tung
chung cong » nhung cong, chong cong, phung cong
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
cua chung » cua nhung, luan chung, luat chung
hoc hieu » hoc hien, doc hieu, hoc dieu
cong tac » cong ty
tac chan » tac chuan, tac can, tac chon
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc hieu) OR (hoc thieu)) nganh - thanh trung cua chung cong tac chan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hieu) OR (hoc thieu)) nganh - thanh trung cua chung cong tac chan cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) OR (hoc thieu)) nganh - thanh trung cua chung cong tac chan cau*.