Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, nhung don
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh vit » trinh viet, trinh vat, trinh vuot
hang cong » dang cong, hang nong, bang cong
trinh vi » trinh va, trinh ve, trinh viet
ban phan » ban phap, van phan, ban than
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: hoc chieu sach - hanh ((trinh vi) or (trinh vit)) ((nhung cong) OR (hang cong)) ban phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((trinh vi) OR (trinh vit)) ((nhung cong) OR (hang cong)) ban phan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh ((trinh vi) or (trinh vit)) ((nhung cong) OR (hang cong)) ban phan tap".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((trinh vi) or (trinh vit)) ((nhung cong) OR (hang cong)) ban phan tap*.