Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung huong » nhung phuong, nhung cong, nhung dung
nhung tuong » nhung phuong, hung vuong, nhung cong
chieu sang » chieu sach, chieu xanh, hieu lang
hiem ngan » kim ngan, viem gan
trung cap » truong cao, trung tam
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 ((hiem ngan) or (chieu sang)) - thanh trung cap ((nhung huong) or (nhung tuong)) dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hiem ngan) OR (chieu sang)) - thanh trung cap ((nhung huong) OR (nhung tuong)) dan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hiem ngan) or (chieu sang)) - thanh trung cap ((nhung huong) or (nhung tuong)) dan toan cau*.