Perhaps you should try some spelling variations:
thanh soc » thanh son, thanh hoc, thanh ngoc
nhanh soc » nganh soc, nhanh doc, nhanh song
van hanh » van thanh, ban hanh, van anh
hieu ban » hieu van, dieu ban, lieu ban
hanh di » hanh vi, hanh de, hang di
su sach » so sach
nang ma » tang ma, sang ma, nang cao
vu sach » vu bach, vu khach
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (vu sach)) ky nang ma hoi. hieu ban ((thanh soc) OR (nhanh soc)) van hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky nang ma hoi. hieu ban ((thanh soc) OR (nhanh soc)) van hanh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ky nang ma hoi. hieu ban ((thanh soc) OR (nhanh soc)) van hanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky nang ma hoi. hieu ban ((thanh soc) OR (nhanh soc)) van hanh di cua tre*.