Perhaps you should try some spelling variations:
thanh di » thanh doi, thanh de, thanh do
va thanh » gia thanh, ban thanh, va tinh
bac tuoc » bach tuoc, tac thuoc, bac hoc
su sach » so sach, vu sach
thi van » thi lan, thi hanh, thi nang
tuoc va » thuoc va, nuoc va, duoc va
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
so sanh » do sanh
v nang » va nang, vu nang, van nang
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sanh)) v nang xa hoi. ((thien van) OR (thi van)) bac tuoc va thanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sanh)) v nang xa hoi. ((thien van) OR (thi van)) bac tuoc va thanh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sanh)) v nang xa hoi. ((thien van) OR (thi van)) bac tuoc va thanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) v nang xa hoi. ((thien van) OR (thi van)) bac tuoc va thanh di cua tre*.