Perhaps you should try some spelling variations:
trang luan » tang luan, trang tuan, truong luan
tranh luan » trinh luan, trinh luat, doanh luan
thong cong » trong cong, tong cong, thong thong
cong vang » cong lang, cong quang, cong ngang
chu tinh » chau tinh, chua tinh, cuu tinh
toan cao » toan ban
toan tap » toan ban
hoi chu » hoi chuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi chu tinh - hanh ((trang luan) OR (tranh luan)) thong cong vang ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi chu tinh - hanh ((trang luan) OR (tranh luan)) thong cong vang ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoi chu tinh - hanh ((trang luan) OR (tranh luan)) thong cong vang ((toan cao) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoi chu tinh - hanh ((trang luan) OR (tranh luan)) thong cong vang ((toan cao) or (toan tap))*.