Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh tai, hanh van
mai khoi » mai khoa, tai khoa, cac khoi
su sach » so sach, vu sach
hanh va » hang va, hanh vi
xua van » xua va, qua van, cua van
dau xua » dau cua, dao xuan, dau luan
cuu tre » cua tre, cau tren, cau treo
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
ma hoi » mai hoi, xa hoi, ma hoa
va dau » va dao

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 ty nang ((ma hoi) or (mai khoi)). lieu va dau xua van ((hanh vai) or (hanh va)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ((ma hoi) OR (mai khoi)). lieu va dau xua van ((hanh vai) OR (hanh va)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ((ma hoi) or (mai khoi)). lieu va dau xua van ((hanh vai) or (hanh va)) cuu tre*.