Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
khong cong » thong cong, chong cong, khong con
khong cang » thong cong, hong bang, khong dung
chinh cua » chinh sua, hinh cua, chinh luan
dang toan » dang tran, dan toan, dung toan
chinh ca » chinh ta, chinh va, chinh tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - hanh ((chinh cua) OR (chinh ca)) ((khong cong) or (khong cang)) dang toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh ((chinh cua) OR (chinh ca)) ((khong cong) OR (khong cang)) dang toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh ((chinh cua) OR (chinh ca)) ((khong cong) or (khong cang)) dang toan ban".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ((chinh cua) OR (chinh ca)) ((khong cong) or (khong cang)) dang toan ban*.