Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
dang lap » dan lap, dung lap, sang lap
so sach » so sanh, bo sach, co sach
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
lap hai » lap tai, lap lai, lap hoat
ky dang » ky nang, ky danh
vu sach » vu bach, su sach, vu khach
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (vu sach)) ky dang lap hai. hieu ve cham luc ((va danh) or (va hanh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (vu sach)) ky dang lap hai. hieu ve cham luc ((va danh) OR (va hanh)) vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (vu sach)) ky dang lap hai. hieu ve cham luc ((va danh) or (va hanh)) vi cua te*.