Perhaps you should try some spelling variations:
hieu sach » chieu sach, hieu cach, dien sach
hang cong » dang cong, hang nong, bang cong
doc hieu » toc thieu, hoc thieu, hoc hien
lang cua » mang cua, long cua, tang cua
hang cua » mang cua, hang ca, huong cua
cong tac » cong ty
nhan sau » nhan san, nhanh cau, thanh sau
nhan su » nhan luc

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sach - nhanh ((lang cua) OR (hang cua)) hang cong tac ((nhan sau) or (nhan su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - nhanh ((lang cua) OR (hang cua)) hang cong tac ((nhan sau) OR (nhan su)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu sach - nhanh ((lang cua) OR (hang cua)) hang cong tac ((nhan sau) or (nhan su))".
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - nhanh ((lang cua) OR (hang cua)) hang cong tac ((nhan sau) or (nhan su))*.