Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
tang van » dang van, hoang van, trong van
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va danh » va dinh, va dan, va hanh
te sach » toc sach
luc va » duc va, tuc va, loc va
dau su » dau tu, da su, dat su
dan su » dang su

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 ((tang van) or (mang may)) hoi. hieu ve cham luc va danh ((dau su) OR (dan su)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((tang van) OR (mang may)) hoi. hieu ve cham luc va danh ((dau su) OR (dan su)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((tang van) or (mang may)) hoi. hieu ve cham luc va danh ((dau su) OR (dan su)) triet".
• Adding a wildcard symbol may retrieve word variants: te sach y ((tang van) or (mang may)) hoi. hieu ve cham luc va danh ((dau su) OR (dan su)) triet*.