Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hien bach » vien bach, hien hanh, dien sach
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang xa hoi. hieu ((hien bach) OR (thien hach)) nuoc va danh vi cua tu~.
• Adding a wildcard symbol may retrieve word variants: so sach ty nang xa hoi. hieu ((hien bach) or (thien hach)) nuoc va danh vi cua tu*.