Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
thanh dai » thanh hai, thanh dat, thanh oai
cham xuc » cam xuc, chat xuc, cham soc
dang xay » dang van, van xay
bo sach » co sach, hoc sach
sach ky » sac ky, sach y, sach ty
va cham » va chat, va tham
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach ky ((nang x) or (dang xay)) hoi. hieu va cham xuc va ((thanh dai) OR (thanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ky ((nang x) OR (dang xay)) hoi. hieu va cham xuc va ((thanh dai) OR (thanh tai)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo sach ky ((nang x) or (dang xay)) hoi. hieu va cham xuc va ((thanh dai) OR (thanh tai)) cua tre*".