Perhaps you should try some spelling variations:
hanh via » hanh vi, hanh va, anh va
tu sach » thu sach, su sach, te sach
via cuu » via cua, vinh cuu
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
vu nang » vuc nang, va nang, vu dang
y nang » ky nang, ly nang, v nang
ve bao » te bao, va bao
ve cao » va cao, ve cac, ve co
x hoi » xa hoi, o hoi, x ho

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 ((y nang) or (vu nang)) x hoi. hieu ((ve cao) OR (ve bao)) duc va hanh via cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (vu nang)) x hoi. hieu ((ve cao) OR (ve bao)) duc va hanh via cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) or (vu nang)) x hoi. hieu ((ve cao) OR (ve bao)) duc va hanh via cuu tre*".