Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
dat tren » dat trong, dua tren
lang xa » lang ha, dang xay, lang van
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
y lang » o lang, _ lang, tay lang
va cau » van cau, va cac, va dau
va dao » ca dao
anh ve » hanh ve, anh va, anh viet
ve dat » de dat, va dat, ve dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach y lang xa hoi. hieu ((va cau) or (va dao)) ((xuc van) or (duc van)) anh ve dat tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y lang xa hoi. hieu ((va cau) OR (va dao)) ((xuc van) OR (duc van)) anh ve dat tren.
• Adding a wildcard symbol may retrieve word variants: thuoc sach y lang xa hoi. hieu ((va cau) or (va dao)) ((xuc van) or (duc van)) anh ve dat tren*.