Perhaps you should try some spelling variations:
thanh di » thanh doi, thanh de, thanh do
truc van » truc va, thuc van, truc ban
tru nang » tra nang, tri nang, truc nano
su sach » so sach, vu sach
tu nang » tu nong, tu nano, tu lang
cuu tre » cua tre, cau tren, cau treo
va dau » va dao
tuc va » thuc va, truc va, tuc xa
di cuu » di cau, di cua, dinh cuu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((tu nang) OR (tru nang)) xa hoi. lieu va dau ((tuc va) OR (truc van)) thanh di cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((tu nang) OR (tru nang)) xa hoi. lieu va dau ((tuc va) or (truc van)) thanh di cuu tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ((tu nang) OR (tru nang)) xa hoi. lieu va dau ((tuc va) or (truc van)) thanh di cuu tre*.