Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh
chieu sang » chieu sach, hieu lang, nhieu tang
hanh trinh » canh tranh, hanh chinh
cong quang » luong quang, thong quang, duong quang
quang phan » quang chan, quang phat, quang thanh
hieu manh » hieu nganh, dieu hanh, hien hanh
trinh cua » tinh cua, trinh luat, trinh quan
cua trong » cua truong, cua trung, qua trong
phan dau » phan tu, hang dau

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 ((hieu manh) OR (((chieu sang) OR (chieu xanh)))) - hanh trinh cua trong cong quang phan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu manh) or (((chieu sang) OR (chieu xanh)))) - hanh trinh cua trong cong quang phan dau~".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (((chieu sang) OR (chieu xanh)))) - hanh trinh cua trong cong quang phan dau*.