Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
qua kham » qua cham, qua khai, qua khao
te sach » toc sach
vuc van » duc van, luc van, thuc van
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
xuc van » duc van, luc van, xuc ban
anh di » danh di, xanh di, anh d
nang o » nang co, nang ho, nang ro
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: te sach ky nang o hoi. hieu qua kham ((xuc van) OR (vuc van)) anh di ((cua triet) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang o hoi. hieu qua kham ((xuc van) OR (vuc van)) anh di ((cua triet) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang o hoi. hieu qua kham ((xuc van) OR (vuc van)) anh di ((cua triet) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang o hoi. hieu qua kham ((xuc van) OR (vuc van)) anh di ((cua triet) or (cuu tre))*.