Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
canh thanh » canh tranh, danh thanh, anh thanh
nhung cong » dung cong, thong cong, hang cong
hoc thien » hoc hien, hoc thieu, hoc thiet
san nhung » sang nhung, ban nhung, sao nhung
cong toan » cong tan, cong hoan, cong tuan
van chat » cao chat
van dau » van dao, phan dau

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 danh - canh thanh san nhung cong toan ((van chat) or (van dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien danh - canh thanh san nhung cong toan ((van chat) OR (van dau)).
• Adding a wildcard symbol may retrieve word variants: hoc thien danh - canh thanh san nhung cong toan ((van chat) or (van dau))*.