Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
thanh va » thanh van, hanh va, thanh ha
sach ty » sach y, sach tu, sach thu
ty lang » tay lang, ty xang, ty hang
lang xa » lang ha, dang xay, lang van
va lam » van lam
va lap » va dap
xuc va » duc va, tuc va, luc va
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty lang xa hoi. lieu ((va lam) OR (va lap)) xuc va ((hanh vi) or (thanh va)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty lang xa hoi. lieu ((va lam) OR (va lap)) xuc va ((hanh vi) OR (thanh va)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty lang xa hoi. lieu ((va lam) OR (va lap)) xuc va ((hanh vi) or (thanh va)) cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ty lang xa hoi. lieu ((va lam) OR (va lap)) xuc va ((hanh vi) or (thanh va)) cua te*.