Perhaps you should try some spelling variations:
dan thanh » dang thanh, danh thanh, ban thanh
va trien » va truyen, va thiet, va tuyen
dan hanh » dang hanh, dan khanh, ban hanh
nam thuc » nam thuoc, am thuc, nam thu
thi lan » thi hanh, thi nang, thi lien
lan nam » van nam, dan nam, ban nam
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
tu sach » thu sach, te sach, tu cach
y nang » ky nang, ly nang, v nang
di va » dai va, di vao, doi va

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: ((tu sach) OR (su sach)) y nang xa hoi. thi lan nam thuc ((dan hanh) OR (dan thanh)) di va trien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) y nang xa hoi. thi lan nam thuc ((dan hanh) OR (dan thanh)) di va trien~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) y nang xa hoi. thi lan nam thuc ((dan hanh) OR (dan thanh)) di va trien*.