Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
thien van » thi van
thanh van » thanh san, thanh toan, thanh phan
cua tre » cuu tre, cua triet, dua tren
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
duc ban » duc tan, duc van, dua ban
lam duc » lam duoc, pham duc, nam duoc
van lam » van nam
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
cua te » cua tu

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 ty nang xa hoi. thien van lam duc ban ((thanh hai) or (thanh van)) ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. thien van lam duc ban ((thanh hai) OR (thanh van)) ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang xa hoi. thien van lam duc ban ((thanh hai) or (thanh van)) ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. thien van lam duc ban ((thanh hai) or (thanh van)) ((cua tre) OR (cua te))*.