Perhaps you should try some spelling variations:
chiet tach » chieu sach
manh tuong » manh tung, manh cuong, minh tuong
thuong dan » huong dan, thuong dam, thuong lan
thuong han » thuong mai, thuong va, thuong gap
hoc chiet » hoc thiet, hoc nhiet, hoc hien
tuong cua » truong cua, huong cua, thong cua
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: hoc chiet tach - manh tuong cua cong ((thuong dan) or (thuong han)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - manh tuong cua cong ((thuong dan) OR (thuong han)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - manh tuong cua cong ((thuong dan) or (thuong han)) toan cau*.