Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
dau tren » dau tien, dat tren, dau tieng
tu sach » thu sach, su sach, te sach
mang xa » lang xa, mang may, dang xay
nang ma » tang ma, sang ma, nang cao
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
luc va » duc va, tuc va, loc va
va dau » va dao

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: tu sach y ((((mang xa) OR (nang x))) OR (nang ma)) hoi. lieu va cham luc va hanh va dau tren~.
• Adding a wildcard symbol may retrieve word variants: tu sach y ((((mang xa) or (nang x))) or (nang ma)) hoi. lieu va cham luc va hanh va dau tren*.