Perhaps you should try some spelling variations:
thanh thai » thanh hai, thanh tai, nhanh thai
minh thanh » dinh thanh, tinh thanh, hinh thanh
hieu van » hieu va, thien van, lieu va
thai cua » than cua, tai cuc, tri cua
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
cam duc » cao duc, pham duc, nam duoc
cua tre » cua te, cuu tre, cua triet

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 ky tang xa hoi. hieu van ((cam duc) or (cam xuc)) minh thanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky tang xa hoi. hieu van ((cam duc) OR (cam xuc)) minh thanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky tang xa hoi. hieu van ((cam duc) or (cam xuc)) minh thanh thai cua tre*.