Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thanh chau » thanh cha, thanh cham, thanh chu
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh hanh » hanh han, xanh hanh, nhanh thanh
thanh cau » thanh mau, thanh ca, thanh cac
nhanh cau » nhanh cay, nhanh ha, hang cau
hoc hieu » hoc thieu, hoc hien, doc hieu
cong san » cong tac
hanh va » hang va, hanh vi

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - hanh hanh va thuong cong san ((((thanh cau) OR (nhanh cau))) or (thanh chau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh hanh va thuong cong san ((((thanh cau) OR (nhanh cau))) OR (thanh chau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - hanh hanh va thuong cong san ((((thanh cau) OR (nhanh cau))) or (thanh chau))".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh hanh va thuong cong san ((((thanh cau) OR (nhanh cau))) or (thanh chau))*.