Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
vu sach » vu bach, su sach, vu khach
cua tre » cua te, cua triet, dua tren
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
sach lo » sach dao, sach doi, sach hoi
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sang ma » tang ma, nang ma, sang tao
nang xa » nang x, lang xa, nang ma
cuu tre » cau tren, cau treo
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach lo ((nang xa) or (sang ma)) hoi. hieu ve cham luc va hanh di ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach lo ((nang xa) OR (sang ma)) hoi. hieu ve cham luc va hanh di ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: vu sach lo ((nang xa) or (sang ma)) hoi. hieu ve cham luc va hanh di ((cua tre) or (cuu tre))*.