Perhaps you should try some spelling variations:
trinh luan » trinh quan, trinh han, trinh toan
nhung cong » dung cong, thong cong, hang cong
chua tinh » cua tinh, cha tinh, thuat tinh
chu tinh » chau tinh, cuu tinh, chu tich
cong san » cong tac
san tuan » van tuan, san luan, san quan
tuan cau » toan cau, quan cau, tuan cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chu tinh) OR (chua tinh)) - hanh ((trinh luan) or (trinh luat)) nhung cong san tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chu tinh) OR (chua tinh)) - hanh ((trinh luan) OR (trinh luat)) nhung cong san tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chu tinh) OR (chua tinh)) - hanh ((trinh luan) or (trinh luat)) nhung cong san tuan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chu tinh) OR (chua tinh)) - hanh ((trinh luan) or (trinh luat)) nhung cong san tuan cau*.