Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh hang » thanh hang, hang hang, hanh han
ca thuong » cao thuong, cua thuong, va thuong
cong san » cong tac
van tuan » van quan, van ban, anh tuan
hang ca » hang va, nang cao, hang tai
van tai » von tai

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: ho ((hieu manh) OR (chieu sang)) - hanh hang ca thuong cong san ((van tai) OR (van tuan))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (chieu sang)) - hanh hang ca thuong cong san ((van tai) OR (van tuan))~".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sang)) - hanh hang ca thuong cong san ((van tai) OR (van tuan))*.