Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
ban thanh » ban hanh, ban hang
vu sach » su sach, vu khach
duc ban » duc tan, duc van, dua ban
lam duc » lam duoc, pham duc, nam duoc
cu tren » tu tren, dua tren
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
va lam » van lam, va lap
van cu » van cau, van chu, van cua

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 (vu bach)) ky ((nang xa) or (nang ma)) hoi. lieu va lam duc ban thanh van cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu bach)) ky ((nang xa) OR (nang ma)) hoi. lieu va lam duc ban thanh van cu tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (vu bach)) ky ((nang xa) or (nang ma)) hoi. lieu va lam duc ban thanh van cu tren".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (vu bach)) ky ((nang xa) or (nang ma)) hoi. lieu va lam duc ban thanh van cu tren*.