Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
nhung cong » dung cong, thong cong, hang cong
hien tach » thien hach, chiet tach, vien bach
tuong cua » truong cua, huong cua, thong cua
cua nhung » va nhung
cong cang » cong cong, cong lang, cong vang
thang cao » thong cao, nang cao, quang cao
thang lao » tang lao, thang loi, thang tam
thanh lap » thanh san, phan lap, thanh hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien tach - thanh tuong cua nhung cong cang ((thang cao) or (((thang lao) OR (thanh lap))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tach - thanh tuong cua nhung cong cang ((thang cao) OR (((thang lao) OR (thanh lap)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien tach - thanh tuong cua nhung cong cang ((thang cao) or (((thang lao) OR (thanh lap))))".
• Adding a wildcard symbol may retrieve word variants: hoc hien tach - thanh tuong cua nhung cong cang ((thang cao) or (((thang lao) OR (thanh lap))))*.