Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
tieu xanh » tieu danh, chieu xanh, dieu hanh
hang cong » dang cong, hang nong, bang cong
tang cua » hang cua, tang luan, thong cua
mang cua » manh cua, dung cua, ban cua
cong dan » cong san, cong tan, huong dan
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 - hanh ((((tang cua) OR (mang cua))) or (trung tuan)) hang cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh ((((tang cua) OR (mang cua))) OR (trung tuan)) hang cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh ((((tang cua) OR (mang cua))) or (trung tuan)) hang cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh ((((tang cua) OR (mang cua))) or (trung tuan)) hang cong dan toan cao*.