Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
dung thanh » duong thanh, dong thanh, dung thang
dang thanh » dong thanh, dang hanh, hoang thanh
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
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: hoc thieu xanh - thanh trung cua cong ((dung thanh) or (dang thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh trung cua cong ((dung thanh) OR (dang thanh)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh trung cua cong ((dung thanh) or (dang thanh)) toan cao*.