Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
trinh quan » tinh quang, trinh luat, trinh han
hieu sach » chieu sach, hieu cach, dien sach
trinh cua » tinh cua, trinh luat, trinh luan
doc hieu » toc thieu, hoc thieu, hoc hien
tuong ha » thuong ha, tuong ho, luong ha
juan cao » quang cao, toan cao, quan cau
xuan can » xuan cang, xuan tan, xuan chanh

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - hanh ((trinh cua) OR (trinh quan)) nhung tuong ha ((juan cao) OR (xuan can))~.
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - hanh ((trinh cua) or (trinh quan)) nhung tuong ha ((juan cao) or (xuan can))*.