Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh huong, thanh cuong
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hoc thuat » hoc thuyet, hoc thuc, hoc chat
thuat tac » thuat tach, thuat tao, thuat tai
cua thong » cua thuong, cua khong, cua tong
cong manh » cong danh, duong manh, cong thanh
manh van » anh van, menh van, canh van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thuat tac - ((thanh tuong) or (thanh tung)) cua thong cong manh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thuat tac - ((thanh tuong) OR (thanh tung)) cua thong cong manh van ban*.