Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu manh » tien manh, trieu minh, chieu xanh
thong cong » trong cong, tong cong, phong chong
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung cua » truong cua, trung tuan, trung cap
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

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