Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
thien bang » khien bang, thien ban, thien dang
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hanh tang » hanh trang, anh tang, hanh mang
manh toan » thanh toan, anh tuan, tinh toan
tang cua » mang cua, hang cua, tang luan
toan 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 ((thien danh) or (thien bang)) - hanh tang cua ((nhung cong) OR (thong cong)) manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien danh) OR (thien bang)) - hanh tang cua ((nhung cong) OR (thong cong)) manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien danh) or (thien bang)) - hanh tang cua ((nhung cong) OR (thong cong)) manh toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien danh) or (thien bang)) - hanh tang cua ((nhung cong) OR (thong cong)) manh toan ban*.