Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tieu sach » chieu sach, dien sach, te sach
hanh dung » thanh dung, hanh dong, manh dung
tan tranh » tan tran, can tranh, lan tranh
tranh ban » trinh ban, tranh hang, tranh luan
anh dung » anh dong, anh huong, sach dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - ((hanh dung) or (anh dung)) cua ((nhung cong) or (han tong)) tan tranh ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - ((hanh dung) OR (anh dung)) cua ((nhung cong) OR (han tong)) tan tranh ban.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - ((hanh dung) or (anh dung)) cua ((nhung cong) or (han tong)) tan tranh ban*.