Perhaps you should try some spelling variations:
trinh quang » trinh quan, tranh quang, trinh dung
nhung huong » nhung phuong, nhung tuong, nhung cong
theo chieu » theo tieu, theo chu, thi chieu
ho chieu » hoc thieu, doi chieu, mot chieu
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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