Perhaps you should try some spelling variations:
thieu quang » thien quan, trien quang, hieu quan
hieu quang » hieu quan, hieu qua, diep quang
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
cong toan » cong tan, cong hoan, cong doan
cong tuan » cong tan, cong luan, cong thanh
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: ho ((hieu quang) OR (thieu quang)) - hanh trinh cua nhung ((cong toan) or (cong tuan)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu quang) OR (thieu quang)) - hanh trinh cua nhung ((cong toan) OR (cong tuan)) phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu quang) OR (thieu quang)) - hanh trinh cua nhung ((cong toan) or (cong tuan)) phan dau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu quang) OR (thieu quang)) - hanh trinh cua nhung ((cong toan) or (cong tuan)) phan dau*.