Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
phat xuc » chat xuc, phat xuat, phap xu
va triet » va thiet, va trien, ve triet
te sach » toc sach
hieu va » lieu va, hieu qua
nang o » nang co, nang ho, nang ro
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
o hoi » co hoi, o hoc, o hai
vi va » vi van, vai va, vu va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuat san)) ky nang o hoi. hieu va phat xuc va dan vi va triet~.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuat san)) ky nang o hoi. hieu va phat xuc va dan vi va triet*.