Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
ban lang » ban hang, ba lang, ban dang
phai cua » thai cua, hai cua, phat cua
cay phoi » cap phoi, tay hoi, cay cho
hieu van » hieu va, thien van, lieu va
phi cua » chi cua, khi cua, thi cua
van bao » van ban, van dao
duc ban » duc tan, duc van, dua ban
bao duc » dao duc, bao luc, cao duc
y dang » ky dang, 2 dang, b dang
_ dang » _ dan, 2 dang, _ danh

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khach ((y dang) or (_ dang)) cay phoi. hieu van bao duc ban lang ((phi cua) or (phai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ((y dang) OR (_ dang)) cay phoi. hieu van bao duc ban lang ((phi cua) OR (phai cua)) te.
• Adding a wildcard symbol may retrieve word variants: vu khach ((y dang) or (_ dang)) cay phoi. hieu van bao duc ban lang ((phi cua) or (phai cua)) te*.