Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
dieu cua » dieu tra
van hanh » van thanh, ban hanh, van anh
kho tang » cao tang
thu san » thuy san, thu ban, phu san
luc van » luoc van, luu van, duc van
tu cham » toc cham, thi cham
hieu tu » chieu tu, hieu tuc, hien tu
ky tang » ky nang, ky dang, ky trong
de cua » le cua, te cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu san ((ky tang) OR (kho tang)) ha noi. hieu tu cham luc van hanh ((de cua) or (dieu cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu san ((ky tang) OR (kho tang)) ha noi. hieu tu cham luc van hanh ((de cua) OR (dieu cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu san ((ky tang) OR (kho tang)) ha noi. hieu tu cham luc van hanh ((de cua) or (dieu cua)) tre".
• Adding a wildcard symbol may retrieve word variants: thu san ((ky tang) OR (kho tang)) ha noi. hieu tu cham luc van hanh ((de cua) or (dieu cua)) tre*.