Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
thien hach » thien thanh, hien hanh
nhung cong » dung cong, thong cong, hang cong
hoc thien » hoc hien, hoc thieu, hoc thiet
cong cang » cong cong, cong lang, cong vang
thang cao » thong cao, nang cao, quang cao
thang lao » tang lao, thanh lap, thang loi
tuong va » truong va, thuong va, luong va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien hach - thanh tuong va nhung cong cang ((thang cao) or (thang lao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - thanh tuong va nhung cong cang ((thang cao) OR (thang lao)).
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - thanh tuong va nhung cong cang ((thang cao) or (thang lao))*.