Perhaps you should try some spelling variations:
thuong hoan » thuong han, phuong hoang, huong hoa
chieu sach » chinh sach, chiet tach, chieu sang
trinh quan » tinh quang, trinh luat, trinh han
trinh cua » tinh cua, trinh luat, trinh luan
ho chieu » theo chieu, hoc thieu, doi chieu
hoan van » hoang van, hoa van, doan van
van tao » van thao, vang tao, van tai
tao cao » bao cao, toan cao

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 cua) OR (trinh quan)) thuong hoan van tao cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((trinh cua) OR (trinh quan)) thuong hoan van tao cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trinh cua) OR (trinh quan)) thuong hoan van tao cao*.