Perhaps you should try some spelling variations:
hoc chieu » hoc thieu, ho chieu, hoc dieu
trinh van » trinh han, trinh quan, trinh toan
hang cong » dang cong, hang nong, bang cong
dan thanh » dang thanh, danh thanh, ban thanh
thanh lap » thanh san, phan lap, thanh hai
trinh va » trinh vat, trinh ve, trinh vi
cong dan » cong san, cong tan, huong dan

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) or (hoc hien)) sach - hanh ((trinh va) OR (trinh van)) hang cong dan thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc hien)) sach - hanh ((trinh va) OR (trinh van)) hang cong dan thanh lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (hoc hien)) sach - hanh ((trinh va) OR (trinh van)) hang cong dan thanh lap".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc hien)) sach - hanh ((trinh va) OR (trinh van)) hang cong dan thanh lap*.