Perhaps you should try some spelling variations:
trinh thuat » trinh luat, trinh thiet, trinh thuc
hanh trinh » canh tranh, hanh chinh
hien sach » dien sach, kien sach, thien hach
van quang » van quan, tran quang, van tuan
quang cap » quang cao, quang chan, quang nam
ban cong » bang cong, phan cong, ban huong
van cong » van dong, van phong, phan cong

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - hanh trinh thuat ((ban cong) OR (van cong)) van quang cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien sach - hanh trinh thuat ((ban cong) OR (van cong)) van quang cap".
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - hanh trinh thuat ((ban cong) OR (van cong)) van quang cap*.