Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
trinh vat » trinh van, trinh luat, sinh vat
cong manh » cong danh, duong manh, cong thanh
ho chieu » theo chieu, hoc thieu, doi chieu
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
tinh va » tich va, trinh van, tinh gia

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 - thanh ((tinh va) or (trinh vat)) nhung cong manh ((toan cau) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((tinh va) OR (trinh vat)) nhung cong manh ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((tinh va) or (trinh vat)) nhung cong manh ((toan cau) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((tinh va) or (trinh vat)) nhung cong manh ((toan cau) OR (toan tap))*.