Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
vu sach » vu bach, vu khach
va hanh » van hanh, va thanh, va danh
cau luc » cau truc, cau phuc
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
ly lang » ly hang, ly vang, le lang
su sach » so sach
vi cua » vai cua, di cua
va cau » van cau, va cac, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (su sach)) ly lang xa hoi. hieu va cau luc ((va hanh) or (van thanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) ly lang xa hoi. hieu va cau luc ((va hanh) OR (van thanh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (su sach)) ly lang xa hoi. hieu va cau luc ((va hanh) or (van thanh)) vi cua tre*.