Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hien sach » dien sach, kien sach, thien hach
hanh mang » nhanh mang, hanh trang, nhanh lang
cua nhung » va nhung
kien mac » dien mao, tien mai, kien ha
mang cua » manh cua, dung cua, ban cua
cong tan » cong tac, cong san, cong thanh
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien sach) or (kien mac)) - hanh mang cua nhung cong tan ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien sach) OR (kien mac)) - hanh mang cua nhung cong tan ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien sach) or (kien mac)) - hanh mang cua nhung cong tan ((toan tap) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien sach) or (kien mac)) - hanh mang cua nhung cong tan ((toan tap) OR (toan ban))*.