Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, chat lua
cham cuu » cap cuu, chat cua
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
dau cay » dau xay, dau ngay
cay cua » ca cua, day cua, cay ca
va dau » va dao

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 ly nang x ho. hieu qua ((cham luc) OR (cham cuu)) va dau cay cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ly nang x ho. hieu qua ((cham luc) OR (cham cuu)) va dau cay cua vat".
• Adding a wildcard symbol may retrieve word variants: tu sach ly nang x ho. hieu qua ((cham luc) OR (cham cuu)) va dau cay cua vat*.