Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
nhanh manh » nhanh mang, nhanh thanh, nhanh tinh
trinh toan » tinh toan, thanh toan, trinh han
hieu lang » hieu quang, nhieu tang, hieu van
cong cong » cong dong, trong cong, dung cong
manh cua » doanh cua, ban cua
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: theo ((hieu lang) OR (chieu sang)) - nhanh manh cua cong cong trinh toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu lang) OR (chieu sang)) - nhanh manh cua cong cong trinh toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) OR (chieu sang)) - nhanh manh cua cong cong trinh toan tap*.