Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
vai cua » dai cua, hai cua, lai cua
cam luc » cau luc
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
dang xa » dang xay, lang xa, dang va
dang ha » dong ha, dung ha, lang ha
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 ((dang xa) OR (dang ha)) hoi. hieu va ((cam luc) or (cam xuc)) va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((dang xa) OR (dang ha)) hoi. hieu va ((cam luc) OR (cam xuc)) va thanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((dang xa) OR (dang ha)) hoi. hieu va ((cam luc) or (cam xuc)) va thanh vai cua tre*".