Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
chiet tach » chieu sach
thuat mach » thuat sach, thuat tach, thuyet mach
tranh van » tran van, trinh van, thanh van
dung cong » dung trong
van dung » van dong, xay dung, tin dung
cong san » cong tac
san phan » san pham, van phan, sat phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoa ((((thien hach) or (chiet tach))) or (thuat mach)) - canh tranh van dung cong san phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoa ((((thien hach) OR (chiet tach))) OR (thuat mach)) - canh tranh van dung cong san phan tu.
• Adding a wildcard symbol may retrieve word variants: hoa ((((thien hach) or (chiet tach))) or (thuat mach)) - canh tranh van dung cong san phan tu*.