Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach tru » sach truc, sach thu, sach tu
tru nang » tra nang, tri nang, truc nano
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
te sach » toc sach
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, dua tren
nang o » nang co, nang ho, nang ro
ve cam » ve cham, ve cac, va cam
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 tru nang o hoi. hieu ve cam xuc van hanh lai ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tru nang o hoi. hieu ve cam xuc van hanh lai ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: te sach tru nang o hoi. hieu ve cam xuc van hanh lai ((cua tre) OR (cua triet))*.