Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
sach va » sach xa, sach dao, sach nha
dinh di » dinh du, dinh vi, danh di
va dinh » van dinh, va kinh, va tinh
tu cham » toc cham, thi cham
hieu tu » chieu tu, hieu tuc, hien tu
nang ma » tang ma, sang ma, nang cao
lang xa » lang ha, dang xay, lang van
sach ha » sach nha, sach han, sach xa
luc va » duc va, tuc va, loc va
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach va) or (sach ha)) ((lang xa) or (nang ma)) hoi. hieu tu cham luc va dinh di cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach va) OR (sach ha)) ((lang xa) OR (nang ma)) hoi. hieu tu cham luc va dinh di cua vat.
• Adding a wildcard symbol may retrieve word variants: tu ((sach va) or (sach ha)) ((lang xa) or (nang ma)) hoi. hieu tu cham luc va dinh di cua vat*.