Perhaps you should try some spelling variations:
chiet tach » chieu sach
nhung cong » dung cong, thong cong, nhung don
hoc chiet » hoc thiet, hoc nhiet, hoc hien
trinh vat » trinh van, trinh luat, sinh vat
hang cong » dang cong, hang nong, bang cong
trinh va » trinh van, trinh ve, trinh vi
ban hanh » ban hang
hanh tap » han tap, hanh tai, hang 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 chiet tach - hanh ((trinh va) or (trinh vat)) ((nhung cong) or (hang cong)) ban hanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - hanh ((trinh va) OR (trinh vat)) ((nhung cong) OR (hang cong)) ban hanh tap.
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - hanh ((trinh va) or (trinh vat)) ((nhung cong) or (hang cong)) ban hanh tap*.