Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
qua cham » qua hai, qua cac, va cham
tu cach » tu cac
tinh di » tinh doi, trinh di, tinh da
va tinh » may tinh
cuu tre » cua tre, cau tren, cau treo
su sach » so sach
vu sach » vu bach, vu khach
nang o » nang co, nang ho, nang ro
luc va » duc va, tuc va, loc va
di cuu » di cau, di cua, dinh cuu
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (((vu sach) OR (su sach)))) ky nang o hoi. hieu qua cham luc va tinh di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (((vu sach) OR (su sach)))) ky nang o hoi. hieu qua cham luc va tinh di cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (((vu sach) OR (su sach)))) ky nang o hoi. hieu qua cham luc va tinh di cuu tre*".