Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trinh quan » tinh quang, trinh han
nhung cong » dung cong, thong cong, hang cong
trinh cua » tinh cua, trinh luan, trinh chat
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
toan tap » toan ban

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 cua) OR (trinh quan))) or (trinh luat)) nhung cong manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh ((((trinh cua) OR (trinh quan))) OR (trinh luat)) nhung cong manh toan tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh ((((trinh cua) OR (trinh quan))) or (trinh luat)) nhung cong manh toan tap*".