Perhaps you should try some spelling variations:
pham cuc » pham chuc, pham duc, pham cua
ban hanh » ban hang
hanh dai » hanh tai, hanh dao, vanh dai
hieu va » lieu va, hieu qua
va pham » van pham, va phat, va phap
cuc ban » cua ban, cac ban, cuu ban
cua tre » cua te, cuu tre, cua triet
my hoc » ly hoc, mo hoc, mi hoc
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang ((o hoi) or (((y hoc) or (my hoc)))). hieu va pham cuc ban hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((o hoi) OR (((y hoc) OR (my hoc)))). hieu va pham cuc ban hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((o hoi) or (((y hoc) or (my hoc)))). hieu va pham cuc ban hanh dai cua tre*.