Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
cua nhung » va nhung
canh dan » canh van, sanh dan, thanh dan
cong tac » cong ty
toan cau » toan tap, toan tai
toan ban » van ban
toan cao » toan tap
dan cua » dan ca, ban cua, dai cua

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

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