Perhaps you should try some spelling variations:
van phan » van phong, van thanh, luan phan
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
nang xa » nang x, lang xa, nang ma
van hau » van ha, van dau, van hac
van hai » van ha, van chat
luc van » luoc van, luu van, duc van
hanh de » hanh ve, hanh kem
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
de cua » le cua, te cua, dieu cua

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 y nang xa hoi. hieu ((van hau) or (((van hai) OR (van phan)))) luc van hanh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. hieu ((van hau) OR (((van hai) OR (van phan)))) luc van hanh de cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang xa hoi. hieu ((van hau) or (((van hai) OR (van phan)))) luc van hanh de cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. hieu ((van hau) or (((van hai) OR (van phan)))) luc van hanh de cua tre*.