Perhaps you should try some spelling variations:
thien chanh » thien thanh, thien chinh, hien hanh
thien dang » thien bang, thien danh, thien nang
hanh tang » hanh trang, anh tang, hanh mang
dang cong » dung cong
tang cua » mang cua, hang cua, tang luan
cua dang » cua cong, cua ban
cong san » cong tac
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien chanh) OR (thien dang)) - hanh tang cua dang cong san van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien chanh) OR (thien dang)) - hanh tang cua dang cong san van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien chanh) OR (thien dang)) - hanh tang cua dang cong san van ban*.