Perhaps you should try some spelling variations:
ngang thanh » nang thanh, nganh thanh, ngan thanh
chiet tach » chieu sach
cong ngang » cong nhan, cong quang, cong lang
trang van » tran van, trang va, trong van
dung cong » dung trong
thanh chu » thanh chau, thanh cha, thanh thu
ho chiet » ho chieu, ho thiet, hoc thiet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - hanh ((trang van) or (trong cac)) dung cong ngang thanh chu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - hanh ((trang van) OR (trong cac)) dung cong ngang thanh chu.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - hanh ((trang van) or (trong cac)) dung cong ngang thanh chu*.