Perhaps you should try some spelling variations:
chiet tach » chieu sach
trinh quan » tinh quang, trinh luat, trinh han
thong cong » trong cong, tong cong, phong chong
hoc chiet » hoc thiet, hoc nhiet, hoc hien
trinh cua » tinh cua, trinh luat, trinh luan
van tan » van tuan, van ban, van tai
tan ban » toan ban, tang ban, van ban

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 - hanh ((trinh cua) or (trinh quan)) ((thong cong) or (thong thong)) van tan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - hanh ((trinh cua) OR (trinh quan)) ((thong cong) OR (thong thong)) van tan ban.
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - hanh ((trinh cua) or (trinh quan)) ((thong cong) or (thong thong)) van tan ban*.