Perhaps you should try some spelling variations:
phan duc » pham duc, phan tu, phan dau
tan hanh » tan thanh, tang hanh, toan hanh
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
ve phan » va phan, ke phan, ve phat
so viet » hoc viet
x hoi » xa hoi, o hoi, x ho
vi so » vi soi, vi mo, va so

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang x hoi. hieu ve phan duc tan hanh vi so viet~.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. hieu ve phan duc tan hanh vi so viet*.