Perhaps you should try some spelling variations:
thong duong » tuong duong, thong dung, thong huong
tieu xanh » tieu danh, chieu xanh, dieu hanh
duong dan » duong dang, huong dan, duong van
trung va » truong va, trung ha, trung tam
trang va » tran van, hang va
dan toan » van toan, dan than, manh toan
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: theo tieu xanh - thanh ((trung va) or (trang va)) thong duong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - thanh ((trung va) OR (trang va)) thong duong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - thanh ((trung va) or (trang va)) thong duong dan toan cao*.