Perhaps you should try some spelling variations:
xuan truong » xa truong, duong truong
nhieu tang » chieu sang, hieu lang, nhiet nang
luan tuong » luan luong, luat thuong, luan phuong
thuc thanh » thuoc thanh, thuc hanh, phuc thanh
hanh tang » hanh trang, anh tang, hanh mang
cong thuc » cong tac
thanh lap » thanh san, phan lap, thanh hai
he nhieu » hop nhieu, phu nhieu, he dieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: he nhieu tang - hanh tang ((luan tuong) or (xuan truong)) cong thuc thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: he nhieu tang - hanh tang ((luan tuong) OR (xuan truong)) cong thuc thanh lap.
• Adding a wildcard symbol may retrieve word variants: he nhieu tang - hanh tang ((luan tuong) or (xuan truong)) cong thuc thanh lap*.