Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
cong ngang » cong nhan, cong quang, cong lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
dang cong » dung cong
tinh cua » trinh cua, sinh cua, tinh chat
cua dang » cua cong, cua ban
toan cao » toan ban
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu manh) or (chieu sang)) - nhanh tinh cua dang cong ngang ((toan cao) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sang)) - nhanh tinh cua dang cong ngang ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (chieu sang)) - nhanh tinh cua dang cong ngang ((toan cao) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sang)) - nhanh tinh cua dang cong ngang ((toan cao) OR (toan tap))*.