Perhaps you should try some spelling variations:
hien bach » vien bach, thien hach, hien hanh
hieu hien » bieu hien, dieu hien, chieu chien
cua viet » ca viet, hoa viet, cua vat
thanh va » thanh van, hanh va, thanh ha
thanh vi » hanh vi, thanh ve, nhanh vi
bach luc » bach tuoc, bach hue, bach qua
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
su sach » so sach, vu sach
luc va » duc va, tuc va, loc va
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. hieu hien bach luc va ((thanh vi) or (thanh va)) ((cuu tre) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu hien bach luc va ((thanh vi) OR (thanh va)) ((cuu tre) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu hien bach luc va ((thanh vi) or (thanh va)) ((cuu tre) or (cua viet))*.