Perhaps you should try some spelling variations:
pham chuc » pham duc, pham huu, kham chua
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
cham cuu » cap cuu, chat cua
vu sach » vu bach, vu khach
vai cua » dai cua, hai cua, lai cua
hieu ve » hieu va, hieu van
dang ha » dong ha, dung ha, lang ha
ky dang » ky nang, ky danh
su sach » so sach
cua tre » cua te, cuu tre, cua triet
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) OR (su sach)) ky dang ha hoi. hieu ve ((cham cuu) or (pham chuc)) ban hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) ky dang ha hoi. hieu ve ((cham cuu) OR (pham chuc)) ban hanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (su sach)) ky dang ha hoi. hieu ve ((cham cuu) or (pham chuc)) ban hanh vai cua tre*".