Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trinh, hanh trang
thong cong » trong cong, tong cong, thong thong
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
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: ho ((dieu hanh) OR (chieu sang)) - hanh tranh cua thong cong van toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((dieu hanh) OR (chieu sang)) - hanh tranh cua thong cong van toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((dieu hanh) OR (chieu sang)) - hanh tranh cua thong cong van toan cao*.