Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
va thanh » gia thanh, ban thanh, va tinh
thanh di » thanh doi, thanh de, thanh do
cau tren » cu tren, dau tren, ca tren
su sach » so sach, vu sach
so sanh » do sanh
cao hoc » co hoc, cho hoc, chat hoc
hieu va » lieu va, hieu qua
va cham » va chat, va tham
luc va » duc va, tuc va, loc va
di cau » da cau, diem cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sanh)) ky nang cao hoc. hieu va cham luc va thanh di cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sanh)) ky nang cao hoc. hieu va cham luc va thanh di cau tren.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) ky nang cao hoc. hieu va cham luc va thanh di cau tren*.