Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
dang van » hoang van, hang va
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
va chua » vua chua, ca chua, va chu
te sach » toc sach
luc va » duc va, tuc va, loc va
va cua » via cua, ca cua, ma cua

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 y ((nang xa) or (dang van)) hoi. hieu van cham luc va hanh ((va cua) OR (va chua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang xa) OR (dang van)) hoi. hieu van cham luc va hanh ((va cua) OR (va chua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((nang xa) or (dang van)) hoi. hieu van cham luc va hanh ((va cua) OR (va chua)) tre*".