Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
thien anh » thien danh, tien anh, thien thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
va thong » va thuong, va phuong, he thong
cong dan » cong san, cong tan, huong dan
phan dau » phan tu, hang dau
than cap » khan cap, thanh lap, thanh cac
tang va » trang va, tang van, thang va

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 anh) or (hieu manh)) - hanh tang va thong cong dan ((phan dau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (hieu manh)) - hanh tang va thong cong dan ((phan dau) OR (than cap)).
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (hieu manh)) - hanh tang va thong cong dan ((phan dau) or (than cap))*.