Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
trinh toan » thanh toan, trinh han, trinh quan
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
ho chieu » theo chieu, hoc thieu, doi chieu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (ho chieu)) xanh - thanh trung cua nhung cong ((trinh toan) OR (tinh toan)) tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (ho chieu)) xanh - thanh trung cua nhung cong ((trinh toan) OR (tinh toan)) tap~".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (ho chieu)) xanh - thanh trung cua nhung cong ((trinh toan) OR (tinh toan)) tap*.