Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
trang cua » tranh cua, trung cua, thang cua
dung cong » dung trong
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
tang cua » mang cua, hang cua, tang luan
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) or (chiet tach)) - hanh ((trang cua) or (tang cua)) dung cong hach toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chiet tach)) - hanh ((trang cua) OR (tang cua)) dung cong hach toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chiet tach)) - hanh ((trang cua) or (tang cua)) dung cong hach toan cau*.