Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
cham xuc » cam xuc, chat xuc, cham soc
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
xuc ban » duc ban, cuc ban, quoc ban
doi cua » dai cua, hoi cua
nang o » nang co, nang ho, nang ro
do cua » co cua, de cua, dong cua
o hoi » co hoi, o hoc, o hai
d cua » de cua, da cua, di cua

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 ky nang o hoi. hieu qua cham xuc ban hanh ((d cua) or (((do cua) OR (doi cua)))) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang o hoi. hieu qua cham xuc ban hanh ((d cua) OR (((do cua) OR (doi cua)))) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang o hoi. hieu qua cham xuc ban hanh ((d cua) or (((do cua) OR (doi cua)))) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang o hoi. hieu qua cham xuc ban hanh ((d cua) or (((do cua) OR (doi cua)))) tre*.