Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trinh quan » tinh quang, trinh luat, trinh han
tieu xanh » chieu xanh, dieu hanh, tien anh
tieu danh » dieu danh, tiep danh, thien danh
trang va » tran van, hang va
quan cau » quang cao, toan cau, quan ha
tang va » tang van, thang va, tang vat

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) OR (tieu danh)) - hanh ((tang va) or (trang va)) nhung cong trinh quan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu xanh) OR (tieu danh)) - hanh ((tang va) OR (trang va)) nhung cong trinh quan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu xanh) OR (tieu danh)) - hanh ((tang va) or (trang va)) nhung cong trinh quan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu xanh) OR (tieu danh)) - hanh ((tang va) or (trang va)) nhung cong trinh quan cau*.