Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chieu sang » chieu sach, chieu xanh, nhieu tang
trinh quan » tinh quang, trinh luat, trinh han
dung thong » dung thuong, dung trong, dong thong
dung doanh » dung dan, dung dong
hieu lang » hieu quang, nhieu tang, hieu van
quan dung » quang dung, quan duong, qua dung
dung toan » dung thang, dung thanh, dung tai

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 lang) or (chieu sang)) - hanh trinh quan dung thong ((dung toan) OR (dung doanh)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chieu sang)) - hanh trinh quan dung thong ((dung toan) OR (dung doanh)) tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (chieu sang)) - hanh trinh quan dung thong ((dung toan) OR (dung doanh)) tap*".