Perhaps you should try some spelling variations:
sang lap » sang ma, sang tai, dan lap
danh vai » danh sai, danh va, doanh van
sang tao » hang tai
hieu van » hieu va, thien van, lieu va
bo sach » co sach, hoc sach
cau luc » cau truc, cau phuc
vai cua » dai cua, hai cua, lai cua
hieu ve » hieu va
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, va hanh
cua cu » cua chu, cua cau, cua su
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: bo sach ky ((sang lap) or (sang tao)) hai. ((hieu ve) or (hieu van)) cau luc va danh vai cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ky ((sang lap) OR (sang tao)) hai. ((hieu ve) OR (hieu van)) cau luc va danh vai cua cu.
• Adding a wildcard symbol may retrieve word variants: bo sach ky ((sang lap) or (sang tao)) hai. ((hieu ve) or (hieu van)) cau luc va danh vai cua cu*.