Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh hang » thanh hang, hang hang, hanh han
hoc lien » hoc hien, hoc vien, hoc tien
hoc dieu » hoc thieu, hoc hien
ca nhung » cua nhung, cam nhung, va nhung
cong san » cong tac
hang ca » hang va, nang cao, hang tai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc lien) or (hoc dieu)) sach - hanh hang ca nhung cong san ((toan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc lien) OR (hoc dieu)) sach - hanh hang ca nhung cong san ((toan ban) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: ((hoc lien) or (hoc dieu)) sach - hanh hang ca nhung cong san ((toan ban) or (van ban))*.