Perhaps you should try some spelling variations:
hien sach » dien sach, kien sach, thien hach
hanh dung » thanh dung, anh dung, hanh dong
cua nhung » va nhung
tuong dan » huong dan, tung dan, truong dai
xuong dan » huong dan, xuong san, nguong dan
dung cua » dung luan, dung cho
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - hanh dung cua nhung ((tuong dan) or (xuong dan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - hanh dung cua nhung ((tuong dan) OR (xuong dan)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - hanh dung cua nhung ((tuong dan) or (xuong dan)) toan cau*.