Perhaps you should try some spelling variations:
cham luoc » cham soc, khai luoc, kham cuoc
van cham » van chat, van tham, va cham
luoc ban » luoc can, quoc ban, buoc ban
dieu tra » dieu tri, kiem tra
sach thu » sach thue, sach thieu, sach tham
hieu van » hieu va, thien van, lieu va
ban hanh » ban hang
sach ky » sac ky, sach y, sach ty
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ky) or (sach thu)) nang x hoi. hieu van cham luoc ban hanh ((dieu cua) or (dieu tra)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach thu)) nang x hoi. hieu van cham luoc ban hanh ((dieu cua) OR (dieu tra)) tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sach thu)) nang x hoi. hieu van cham luoc ban hanh ((dieu cua) or (dieu tra)) tre*.