Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
tuong tac » cong tac, luong tai, tuong lai
tam dung » tam duong, tan dung, am dung
tac dung » sach dung, xay dung, tin dung
toan tai » doanh tai, toan ban, toan cao
toan tap » toan ban

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: hoc thieu xanh - thanh trung ((tam dung) OR (tac dung)) tuong tac ((toan tai) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh trung ((tam dung) OR (tac dung)) tuong tac ((toan tai) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh trung ((tam dung) OR (tac dung)) tuong tac ((toan tai) or (toan tap))*.