Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach
thuat tach » thuat sach, thuat mach, thuat tac
thanh tung » thanh cong
cua nhung » va nhung
tung cua » trung cua, tuong cua, dung cua
cong van » cong vang, song van, cong tan
cong san » cong tac
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((thiet tach) OR (thuat tach)) - thanh tung cua nhung ((cong van) or (cong san)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((thiet tach) OR (thuat tach)) - thanh tung cua nhung ((cong van) OR (cong san)) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((thiet tach) OR (thuat tach)) - thanh tung cua nhung ((cong van) or (cong san)) phan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((thiet tach) OR (thuat tach)) - thanh tung cua nhung ((cong van) or (cong san)) phan cau*.