Perhaps you should try some spelling variations:
thanh loi » thanh hoa, thanh hai, thanh lap
ban thanh » ban hanh, ban hang
cham luc » cham soc, nhan luc, cham cuu
su sach » so sach, vu sach
cua tre » cuu tre, cua triet, dua tren
luc ban » duc ban, cuc ban, luc bat
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
tai hoi » tai khoi, dai hoi, tai hai
ly hang » ly quang
ky hang » ky nang, ky dang, ty hang
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: su sach ((ky hang) OR (ly hang)) tai hoi. hieu ve cham luc ban thanh loi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky hang) OR (ly hang)) tai hoi. hieu ve cham luc ban thanh loi ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky hang) OR (ly hang)) tai hoi. hieu ve cham luc ban thanh loi ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky hang) OR (ly hang)) tai hoi. hieu ve cham luc ban thanh loi ((cua tre) or (cua te))*.