Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
tranh cua » doanh cua, manh cua
cuong tap » luong tap, cong tac, luong tai
cua hang » cua dang, cua nhung, cua cong
cong tap » cong tac, cong tan, tong tap
toan cau » 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: doi ((chieu sang) OR (hieu lang)) - hanh tranh cua hang ((cong tap) or (cuong tap)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (hieu lang)) - hanh tranh cua hang ((cong tap) OR (cuong tap)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) OR (hieu lang)) - hanh tranh cua hang ((cong tap) or (cuong tap)) toan cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) OR (hieu lang)) - hanh tranh cua hang ((cong tap) or (cuong tap)) toan cau*.