Perhaps you should try some spelling variations:
kham luc » khai luoc, kham cuoc, nhan luc
bo sach » co sach, hoc sach
nang xa » nang ma, mang xa, ang xa
lang xa » lang ha, dang xay, lang van
hieu vu » hieu va, hieu ve, hieu su
vu kham » vu khanh
luc van » luoc van, luu van, duc van
minh vi » minh voi, dinh vi, minh va
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach y ((((nang xa) or (nang x))) or (lang xa)) hoi. hieu vu kham luc van minh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach y ((((nang xa) OR (nang x))) OR (lang xa)) hoi. hieu vu kham luc van minh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: bo sach y ((((nang xa) or (nang x))) or (lang xa)) hoi. hieu vu kham luc van minh vi cua tre*.