Perhaps you should try some spelling variations:
thi hang » thi hanh, thi hong, thi thanh
thi nang » thi cong, ki nang, thi hanh
sinh cuu » dinh cuu, sinh cua, sinh cau
vu sach » vu bach, su sach, vu khach
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
cuu tre » cua tre, cau tren, cau treo
va nam » van nam, ha nam, va nay
cua va » cua vat, chua va, cua van
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((thi hang) or (thi nang)) x hoi. hieu va nam cua va nhan sinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((thi hang) OR (thi nang)) x hoi. hieu va nam cua va nhan sinh cuu tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ((thi hang) or (thi nang)) x hoi. hieu va nam cua va nhan sinh cuu tre*.