Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
hieu manh » hieu nganh, dieu hanh, hien hanh
trang cua » tranh cua, tang cua, trung cua
cua nhung » va nhung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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 ((hieu manh) or (((chieu xanh) or (chieu sach)))) - hanh trang cua nhung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (((chieu xanh) OR (chieu sach)))) - hanh trang cua nhung cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (((chieu xanh) or (chieu sach)))) - hanh trang cua nhung cong tac toan cao*.