Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu xanh, hieu cach
chieu sang » chieu xanh, hieu lang, nhieu tang
trinh toan » tinh toan, thanh toan, trinh han
toan thuc » toan hoc, dan thuc, nhan thuc
thuc hang » thuc hanh, thu hang, phuc hang
hang cong » dang cong, hang nong, bang cong
cong than » cong thanh, cong thang, cong tan
than phan » thanh phan, toan phan, thanh pham

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) OR (chinh sach))) or (chieu sang)) - trinh toan thuc hang cong than phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu sach) OR (chinh sach))) OR (chieu sang)) - trinh toan thuc hang cong than phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((chieu sach) OR (chinh sach))) or (chieu sang)) - trinh toan thuc hang cong than phan tu".
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu sach) OR (chinh sach))) or (chieu sang)) - trinh toan thuc hang cong than phan tu*.