Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
van thuong » va thuong, van chuong, van phuong
hoc thien » hoc hien, hoc thieu, hoc thiet
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
dan than » dan chan, ban than, dan toan
van than » van thanh, van thang, van tuan

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 - hanh tang luan van thuong ((dan than) or (van than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - hanh tang luan van thuong ((dan than) OR (van than)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - hanh tang luan van thuong ((dan than) or (van than)) cau*.