Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
cong thanh » dong thanh, cong trinh, cong tan
hoc chieu » hoc thieu, ho chieu, hoc hien
san tap » han tap, man tap, san tay
san he » dan he, san ho, van he
san ha » van ha, son ha, san va

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 ((san he) or (san ha)) thong cong thanh san tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((san he) OR (san ha)) thong cong thanh san tap.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((san he) or (san ha)) thong cong thanh san tap*.