Perhaps you should try some spelling variations:
lam duoc » nam duoc, luat duoc, lam thuoc
hieu van » hieu va, thien van, hieu ve
duoc van » duoc va, duc van, duoc ban
van danh » van doanh, van anh, van hanh
dau cua » dai cua, cau cua, dan cua
day cua » dai cua
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang x ho. ((hieu van) or (lieu va)) lam duoc van danh ((dau cua) OR (day cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang x ho. ((hieu van) OR (lieu va)) lam duoc van danh ((dau cua) OR (day cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang x ho. ((hieu van) or (lieu va)) lam duoc van danh ((dau cua) OR (day cua)) tre*".