Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
nhanh lang » nhanh quang, nhanh thang, nhan dang
ganh nang » anh nang, nganh nong, van nang
cong cong » cong dong, trong cong, dung cong
san toan » van toan, manh toan, xuan toan
dan toan » van toan, dan than, manh toan

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 - ((ganh nang) or (nhanh lang)) cua cong cong ((san toan) or (dan toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((ganh nang) OR (nhanh lang)) cua cong cong ((san toan) OR (dan toan)) cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((ganh nang) or (nhanh lang)) cua cong cong ((san toan) or (dan toan)) cao*.