Perhaps you should try some spelling variations:
thuong dong » phuong dong, tuong dong, chuong dong
chieu sach » chinh sach, chiet tach, chieu sang
cao thuong » cao truong, ca thuong, cho thuong
doi chieu » doc hieu, doi chi, ho chieu
huong cao » luong cao, duong cao, huong cau
dong tac » cong tac, dong tai, dong bac
toan tap » toan ban
phan tap » phan lap, han tap, pha 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 chieu sach - anh huong cao thuong dong tac ((toan tap) or (phan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - anh huong cao thuong dong tac ((toan tap) OR (phan tap)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - anh huong cao thuong dong tac ((toan tap) or (phan tap))*.