Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
te sach » toc sach
ly nang » ky nang, ly hang, ly quang
ly vang » ly hang, ly van, ly quang
van dau » phan dau
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
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: te sach ((ly nang) OR (ly vang)) o hoi. hieu ((van dau) or (van dao)) xuc va hanh dai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ly nang) OR (ly vang)) o hoi. hieu ((van dau) OR (van dao)) xuc va hanh dai cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ly nang) OR (ly vang)) o hoi. hieu ((van dau) or (van dao)) xuc va hanh dai cua vat".
• Adding a wildcard symbol may retrieve word variants: te sach ((ly nang) OR (ly vang)) o hoi. hieu ((van dau) or (van dao)) xuc va hanh dai cua vat*.