Perhaps you should try some spelling variations:
chiet tach » chieu sach
doi chiet » doi chieu, doi chi, doi viet
cam nhung » cam hung, nam nhung, tham nhung
tay nung » xay dung
cong tac » cong ty
than cau » phan cau, than cap, thanh chau
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: doi chiet tach - hanh chinh ((tay nung) or (cam nhung)) cong tac ((than cau) OR (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chiet tach - hanh chinh ((tay nung) OR (cam nhung)) cong tac ((than cau) OR (toan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chiet tach - hanh chinh ((tay nung) or (cam nhung)) cong tac ((than cau) OR (toan cau))".
• Adding a wildcard symbol may retrieve word variants: doi chiet tach - hanh chinh ((tay nung) or (cam nhung)) cong tac ((than cau) OR (toan cau))*.