Perhaps you should try some spelling variations:
trinh quang » tinh quang, trinh quan, tranh quang
thong muong » thong duong, thong huong, trong muong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
muong bang » cuong bang, muong sang, tuong bang
trinh qua » trinh quan, trinh cua, trinh luat
than cau » phan cau, than cap, thanh chau
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: theo chieu sach - hanh ((trinh qua) OR (trinh quang)) thong muong bang ((than cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh ((trinh qua) OR (trinh quang)) thong muong bang ((than cau) OR (toan cau))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh ((trinh qua) OR (trinh quang)) thong muong bang ((than cau) or (toan cau))*".