Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tieu xanh » tieu danh, chieu xanh, dieu hanh
cong tinh » cong trinh, cong vinh, long tinh
quang cau » quang cao, quang cu, quan cau
tang vat » tang van, dang vat, bang vat
trang va » tran van, hang va
tang va » tang van, thang va, hang va

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 va) or (tang vat))) or (trang va)) nhung cong tinh quang cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh ((((tang va) OR (tang vat))) OR (trang va)) nhung cong tinh quang cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh ((((tang va) or (tang vat))) or (trang va)) nhung cong tinh quang cau*.