Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
dinh lam » dinh van, tinh lao
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
bai luc » bao luc, bai luan, dai luoc
hanh va » hang va, hanh vi
luc va » duc va, tuc va, loc va
thiet » thieu

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 ky nang xa hoi. hieu va bai luc va ((((hanh va) or (dinh lam))) or (thanh lap)) va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu va bai luc va ((((hanh va) OR (dinh lam))) OR (thanh lap)) va thiet.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu va bai luc va ((((hanh va) or (dinh lam))) or (thanh lap)) va thiet*.