Perhaps you should try some spelling variations:
nhan luc » nang luc
vu sach » vu bach, su sach, vu khach
va nhan » van nhan, ca nhan, va phan
lai cua » dai cua, hai cua, lai chau
vai cua » dai cua, hai cua, bai cua
luc gia » luoc gia, duc gia, quoc gia
hieu va » lieu va, hieu qua
ty hang » ly hang, ty xang, thi hang
ty tang » tay tang, ty xang, ky tang

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((ty tang) or (ty hang)) ma hoa. hieu va nhan luc gia thanh ((vai cua) or (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ty tang) OR (ty hang)) ma hoa. hieu va nhan luc gia thanh ((vai cua) OR (lai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ((ty tang) or (ty hang)) ma hoa. hieu va nhan luc gia thanh ((vai cua) or (lai cua)) tre*.