Perhaps you should try some spelling variations:
nganh hang » ngan hang, nhanh thang, nganh thanh
luc nganh » luc ngan, chuc nganh, luat nganh
cau tren » cu tren, dau tren, ca tren
thu sach » thuat sach, thuoc sach, thu hoach
cham luc » cham soc, nhan luc, cham cuu
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
tu sach » su sach, te sach, tu cach
ty hang » ly hang, ty xang, thi hang
va cau » van cau, va cac, va dau
x hoi » xa hoi, o hoi, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thu sach)) ty hang ((x hoi) OR (x ho)). hieu ve cham luc nganh hang va cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ty hang ((x hoi) OR (x ho)). hieu ve cham luc nganh hang va cau tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ty hang ((x hoi) OR (x ho)). hieu ve cham luc nganh hang va cau tren*".