Perhaps you should try some spelling variations:
sach vay » sach va, sach hay, sach nay
cham luc » cham soc, nhan luc, cham cuu
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
luc va » duc va, tuc va, loc va
cua tu » cua tuc, cua su, cua cu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach vay) OR (sach y)) nang xa hoi. lieu va cham luc va hanh vi ((cua te) OR (cua tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach vay) or (sach y)) nang xa hoi. lieu va cham luc va hanh vi ((cua te) OR (cua tu))~".
• Adding a wildcard symbol may retrieve word variants: te ((sach vay) or (sach y)) nang xa hoi. lieu va cham luc va hanh vi ((cua te) OR (cua tu))*.