Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh trung » thanh trung, hanh trang, manh trung
hieu manh » chieu xanh, hieu nganh, dieu hanh
hieu lang » chieu sang, hieu quang, nhieu tang
trung cap » truong cao, trung tam
nhung don » nhung van, nhung bo
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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) or (hieu lang)) - hanh trung cap ((nhung don) or (thong cong)) dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (hieu lang)) - hanh trung cap ((nhung don) OR (thong cong)) dan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (hieu lang)) - hanh trung cap ((nhung don) or (thong cong)) dan toan cau*.