Perhaps you should try some spelling variations:
trinh luan » trinh quan, trinh han, trinh toan
mot trieu » mot chieu, mot tri, mon triet
hang cong » dang cong, hang nong, bang cong
ho trieu » 25 trieu, 30 trieu, ho chieu
cong san » cong tac
san phan » san pham, van phan, sat phan
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 trieu) OR (mot trieu)) tinh - hanh ((trinh luan) or (trinh luat)) hang cong san phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho trieu) OR (mot trieu)) tinh - hanh ((trinh luan) OR (trinh luat)) hang cong san phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho trieu) OR (mot trieu)) tinh - hanh ((trinh luan) or (trinh luat)) hang cong san phan dau".
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) OR (mot trieu)) tinh - hanh ((trinh luan) or (trinh luat)) hang cong san phan dau*.