Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
trinh quan » tinh quang, trinh luat, trinh han
khong dung » thong dung, phuong dung, cuong dung
dung quang » dang quang, dung quan, luong quang
quang phan » quang chan, quang phat, quang thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh cua » tinh cua, trinh luat, trinh luan
phan dau » phan tu, hang dau

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 manh) or (chieu sang)) - hanh ((trinh cua) OR (trinh quan)) khong dung quang phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (chieu sang)) - hanh ((trinh cua) OR (trinh quan)) khong dung quang phan dau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu manh) or (chieu sang)) - hanh ((trinh cua) OR (trinh quan)) khong dung quang phan dau*".