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 tinh » cong trinh, cong vinh, long tinh
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 ((chieu sang) OR (diep tinh)) - hanh tranh cua thong cong tinh toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (diep tinh)) - hanh tranh cua thong cong tinh toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (diep tinh)) - hanh tranh cua thong cong tinh toan cao*.