Perhaps you should try some spelling variations:
truc van » truc va, thuc van, truc ban
thanh di » thanh doi, thanh do, thanh dinh
thanh de » hanh de, thanh ve, thanh do
su sach » so sach, vu sach
ly nang » ky nang, ly hang, ly vang
cuu tre » cua tre, cau tren, cau treo
va cau » van cau, va cac, va dau

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