Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
pham cuc » pham chuc, pham duc, pham cua
su sach » vu sach
cam cuc » cam xuc, cham cuu
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
so sach » so sanh, bo sach, co sach

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) OR (so sach)) ky dang xa hoi. hieu ve ((cam cuc) or (pham cuc)) ban hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky dang xa hoi. hieu ve ((cam cuc) OR (pham cuc)) ban hanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky dang xa hoi. hieu ve ((cam cuc) or (pham cuc)) ban hanh vai cua tre*".