Perhaps you should try some spelling variations:
thue cong » thu cong, thien cong, thuat cong
sach thue » sach thu, sach thieu, sach tham
chat luc » chat xuc, chat lua, chat huu
nhan luc » nang luc
hieu cao » chieu cao, hieu cac, hieu ca
cong xa » cong xay, cong xua, cong ha
van anh » van thanh, tuan anh, van minh
su sach » so sach, vu sach
nam ha » nam a, nam va, nam khoa
nam da » nam dan, nam a, nam va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach thue cong xa hoi. hieu cao ((chat luc) or (nhan luc)) van anh ((nam ha) OR (nam da)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thue cong xa hoi. hieu cao ((chat luc) OR (nhan luc)) van anh ((nam ha) OR (nam da)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thue cong xa hoi. hieu cao ((chat luc) or (nhan luc)) van anh ((nam ha) OR (nam da)) triet".
• Adding a wildcard symbol may retrieve word variants: su sach thue cong xa hoi. hieu cao ((chat luc) or (nhan luc)) van anh ((nam ha) OR (nam da)) triet*.