Perhaps you should try some spelling variations:
cham luc » nhan luc, cham cuu, chat lua
te sach » toc sach
tang ma » mang may, tang van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
hanh ly » khanh ly, hanh ky, hang ly
cua tre » cua te, cuu tre, cua triet
y tang » ky tang, 6 tang, 7 tang
ma hoi » mai hoi, xa hoi, ma hoa
ly cua » le 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 tang ma hoi. hieu va ((cham luc) OR (cham soc)) va hanh ly cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y tang ma hoi. hieu va ((cham luc) OR (cham soc)) va hanh ly cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y tang ma hoi. hieu va ((cham luc) OR (cham soc)) va hanh ly cua tre*.