Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trinh suat » trinh luat, trinh quan, trinh luan
trinh sat » trinh san, trinh sau, trinh sai
duong van » duong va, dang van, trong van
ho chieu » theo chieu, hoc thieu, doi chieu
luong va » dung va
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - hanh ((trinh suat) OR (trinh sat)) tuong ((duong van) or (luong va)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((trinh suat) OR (trinh sat)) tuong ((duong van) OR (luong va)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((trinh suat) OR (trinh sat)) tuong ((duong van) or (luong va)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trinh suat) OR (trinh sat)) tuong ((duong van) or (luong va)) toan cau*.