Perhaps you should try some spelling variations:
te sach » toc sach
cac luc » cau luc, coc luc, cac nuoc
lua tre » cua tre, dua tren, luat tri
luy tre » luyen tre
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ve cac » va cac, vien cac
va dan » ca dan, va dao, va dap
y lang » o lang, _ lang, tay lang
va dau » va dao

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 lang xa hoi. hieu ve 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 lang xa hoi. hieu ve cac luc ((va dan) OR (va dau)) vi ((lua tre) OR (luy tre)).
• Adding a wildcard symbol may retrieve word variants: te sach y lang xa hoi. hieu ve cac luc ((va dan) or (va dau)) vi ((lua tre) or (luy tre))*.