Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
thanh dung » thanh duong, thanh tung, thanh hung
nhung cong » dung cong, thong cong, hang cong
soc thiet » hoc thiet, so thiet, toc thieu
sang than » cang thang, dang thanh, sang tao
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: soc thiet tach - thanh dung va nhung cong ((van tuan) or (sang than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: soc thiet tach - thanh dung va nhung cong ((van tuan) OR (sang than)) cau.
• Adding a wildcard symbol may retrieve word variants: soc thiet tach - thanh dung va nhung cong ((van tuan) or (sang than)) cau*.