Perhaps you should try some spelling variations:
thanh le » thinh le, thanh ve, thanh de
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach
ca tren » cau tren, cu tren, la tren
vu sach » vu bach, vu khach
ve cac » va cac, vien cac
ve cao » va cao, ve bao, ve co
x hoi » xa hoi, o hoi, x ho
le ca » le cua, le cap, le cau

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 x hoi. hieu ((ve cao) or (ve cac)) duc va thanh le ca tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky nang x hoi. hieu ((ve cao) OR (ve cac)) duc va thanh le ca tren.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky nang x hoi. hieu ((ve cao) or (ve cac)) duc va thanh le ca tren*.