Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
te sach » toc sach
cac luc » cau luc, coc luc, cac nuoc
lua tre » cua tre, dua tren, luat tri
luy tre » luyen tre
van cac » van hac, van cau, van bac
va dan » ca dan, va dao, va dap
y nang » ky nang, ly nang, v nang
va dau » va dao
x hoi » xa hoi, o hoi, x ho

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 y nang x hoi. hieu van cac luc ((va dan) or (va dau)) vi ((lua tre) or (luy tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu van cac luc ((va dan) OR (va dau)) vi ((lua tre) OR (luy tre)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu van cac luc ((va dan) or (va dau)) vi ((lua tre) or (luy tre))*.