Perhaps you should try some spelling variations:
sach han » sach tham, sach danh, sach nang
nang mai » nang ma, nang tai, nang cai
lang mai » lang dai, lang hai, lang man
su triet » su viet, su tien, ve triet
so sach » so sanh, bo sach, co sach
xuc van » duc van, vuc van, xuc ban
luc van » luoc van, luu van, duc van
hanh va » hang va, hanh vi
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach han ((nang mai) or (lang mai)) hoi. lieu va cam ((xuc van) or (luc van)) hanh va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach han ((nang mai) OR (lang mai)) hoi. lieu va cam ((xuc van) OR (luc van)) hanh va su triet.
• Adding a wildcard symbol may retrieve word variants: so sach han ((nang mai) or (lang mai)) hoi. lieu va cam ((xuc van) or (luc van)) hanh va su triet*.