Perhaps you should try some spelling variations:
sach doi » sach hoi, sach moi, sach dao
chat luc » chat xuc, chat lua, nhan luc
sach lo » sach dao, sach hoi, sach moi
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
luc va » duc va, tuc va, loc va
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach lo) or (sach doi)) nang x ho. hieu va chat luc va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach lo) OR (sach doi)) nang x ho. hieu va chat luc va hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach lo) or (sach doi)) nang x ho. hieu va chat luc va hanh vi cuu tre*.