Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
thanh dam » thanh dat, thanh nam, thanh tam
vien cac » vien bach, vien dai, vien da
va thanh » gia thanh, ban thanh, va tinh
vu sach » vu bach, su sach, vu khach
so sach » so sanh, bo sach, co sach
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
cac luc » cau luc, coc luc, cac nuoc
dam cuu » dam cua, dam cuoi, cham cuu
cuu tre » cua tre, cau tren, cau treo
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: ((vu sach) or (so sach)) ly nang xa hoi. hieu vien cac luc va thanh dam cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (so sach)) ly nang xa hoi. hieu vien cac luc va thanh dam cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (so sach)) ly nang xa hoi. hieu vien cac luc va thanh dam cuu tre*.