Perhaps you should try some spelling variations:
chiet tach » chieu sach
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
hanh hang » thanh hang, hang hang, hanh han
cong cong » cong dong, trong cong, dung cong
hang cua » mang cua, hang ca, huong cua
cong ban » cong bang, cong san, cong tan
ban phan » ban phap, van phan, ban than

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chiet tach) OR (((chieu sang) OR (hieu lang)))) - hanh hang cua cong cong ban phan tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chiet tach) or (((chieu sang) OR (hieu lang)))) - hanh hang cua cong cong ban phan tu~".
• Adding a wildcard symbol may retrieve word variants: theo ((chiet tach) or (((chieu sang) OR (hieu lang)))) - hanh hang cua cong cong ban phan tu*.