Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh han
hien sach » dien sach, kien sach, thien hach
dung cong » dung trong
tinh cua » trinh cua, sinh cua, tinh chat
cong hat » cong nhat, cong chat, cong ha
hat phan » hat nhan, sat phan, vat phan
luat » luan, xuat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - hanh ((((trinh luat) or (tinh cua))) or (trinh quan)) dung cong hat phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - hanh ((((trinh luat) OR (tinh cua))) OR (trinh quan)) dung cong hat phan tu.
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - hanh ((((trinh luat) or (tinh cua))) or (trinh quan)) dung cong hat phan tu*.