Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lap » thanh san, phan lap, thanh hai
van thanh » ban thanh, van tuan
cua tre » cua te, cuu tre, dua tren
xuc van » duc van, luc van, vuc van
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ve cham » va cham, ve chat, vu cham
ve cam » ve cac, va cam, ve cai
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 ((ve cam) or (ve cham)) xuc van thanh lap ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang o hoi. hieu ((ve cam) OR (ve cham)) xuc van thanh lap ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang o hoi. hieu ((ve cam) or (ve cham)) xuc van thanh lap ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang o hoi. hieu ((ve cam) or (ve cham)) xuc van thanh lap ((cua tre) OR (cua triet))*.