Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
chieu sang » chieu sach, chieu xanh, hieu lang
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
vang toan » van toan, dang toan, quang toan
dan toan » van toan, dan than, manh toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((thieu xanh) or (chieu sang)) - thanh trung cua nhung cong ((vang toan) or (dan toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu xanh) OR (chieu sang)) - thanh trung cua nhung cong ((vang toan) OR (dan toan)) cao.
• Adding a wildcard symbol may retrieve word variants: toc ((thieu xanh) or (chieu sang)) - thanh trung cua nhung cong ((vang toan) or (dan toan)) cao*.