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 » tieu danh, chieu xanh, dieu hanh
anh tang » anh dang, anh sang, anh tong
anh bang » anh hoang, anh quang, tinh bang
anh nang » ganh nang, anh dang, anh sang
quan cau » quang cao, toan cau, quan ha

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