Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
phong cong » phong chong, chong cong, phong dong
thong cong » trong cong, tong cong, thong thong
trinh toan » tinh toan, thanh toan, trinh han
cach dung » sach dung, cach mang, tac dung
ho chieu » theo chieu, hoc thieu, doi chieu
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 - cach dung luan ((phong cong) or (thong cong)) trinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - cach dung luan ((phong cong) OR (thong cong)) trinh toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - cach dung luan ((phong cong) or (thong cong)) trinh toan cau*.