Perhaps you should try some spelling variations:
lang man » lang van, lang ban, lang mai
man hoai » mam hoai, van hoai, dang hoai
hanh tai » thanh tai, hang tai, han tai
su sach » so sach, vu sach
hanh va » hang va, hanh vi
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
ve bao » te bao, va bao
ve cao » va cao, ve cac, ve co

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 lang man hoai. hieu ((ve cao) or (ve bao)) duc va ((hanh tai) or (hanh va)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky lang man hoai. hieu ((ve cao) OR (ve bao)) duc va ((hanh tai) OR (hanh va)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky lang man hoai. hieu ((ve cao) or (ve bao)) duc va ((hanh tai) or (hanh va)) cuu tre*.