Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
chau tre » chay tren, chau tho, cho tre
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky song » k song, ky cong, ky trong
song xa » song cua
hieu ve » hieu van
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, vuc van

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky song xa hoi. ((hieu ve) or (hieu va)) cam xuc van hanh lai chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky song xa hoi. ((hieu ve) OR (hieu va)) cam xuc van hanh lai chau tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky song xa hoi. ((hieu ve) or (hieu va)) cam xuc van hanh lai chau tre*.