Perhaps you should try some spelling variations:
tuan vinh » tran vinh, tuan minh, tan vinh
thien van » thi van
vinh cuu » dinh cuu, sinh cua, dinh cu
tru nang » tra nang, tri nang, truc nano
tu sach » thu sach, su sach, te sach
xuc van » duc van, luc van, vuc van
xuc ban » duc ban, cuc ban, quoc ban
van cau » van dau, van hau, van chat
tu nang » tu nong, tu nano, tu lang
cuu tre » cua tre, cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((tu nang) or (tru nang)) xa hoi. thien van cau ((xuc van) OR (xuc ban)) tuan vinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tu nang) OR (tru nang)) xa hoi. thien van cau ((xuc van) OR (xuc ban)) tuan vinh cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((tu nang) or (tru nang)) xa hoi. thien van cau ((xuc van) OR (xuc ban)) tuan vinh cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((tu nang) or (tru nang)) xa hoi. thien van cau ((xuc van) OR (xuc ban)) tuan vinh cuu tre*.