Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
hien sach » dien sach, kien sach, thien hach
trong xay » thong xay, trong cac, trong ca
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
toan cau » toan ban, toan tap, toan tai
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 - thanh trong xay dung cong tan ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - thanh trong xay dung cong tan ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - thanh trong xay dung cong tan ((toan cau) or (toan cao))*.