Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, ho chieu
trang cua » tranh cua, trung cua, thang cua
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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) or (doi chieu)) sach - hanh ((trang cua) or (tang cua)) thong cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (doi chieu)) sach - hanh ((trang cua) OR (tang cua)) thong cong dan than ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (doi chieu)) sach - hanh ((trang cua) or (tang cua)) thong cong dan than ban*.