Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
nhung cong » dung cong, thong cong, hang cong
hieu lang » hieu quang, nhieu tang, hieu van
hanh than » hanh han, hanh nhan, hanh phan
cua nhung » va nhung
than cua » nhan cua, thai cua, ban cua
cong tan » cong tac, cong san, cong thanh
gian cac » gian dan
gian cua » gian xu, ban cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sang) OR (hieu lang)) - hanh than cua nhung cong tan ((gian cac) or (gian cua))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (hieu lang)) - hanh than cua nhung cong tan ((gian cac) OR (gian cua)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) OR (hieu lang)) - hanh than cua nhung cong tan ((gian cac) or (gian cua))".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) OR (hieu lang)) - hanh than cua nhung cong tan ((gian cac) or (gian cua))*.