Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
hoc sach » hoc sinh, hoc cac, hoc anh
va tham » van tham, va thanh, va thuat
va cham » va chat
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
v lang » va lang, o lang, _ lang
soc va » hoc va, loc va, doc va
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
vi cua » vai cua, di cua

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) OR (hoc sach)) v lang xa hoi. lieu ((va cham) or (va tham)) soc va dan vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) v lang xa hoi. lieu ((va cham) OR (va tham)) soc va dan vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) OR (hoc sach)) v lang xa hoi. lieu ((va cham) or (va tham)) soc va dan vi cua tre*".