Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu va » lieu va, hieu qua
xuc va » tuc va, luc va, xac va
di cua » dai cua, doi cua, de cua
le cua » ly cua
x hoi » xa hoi, o hoi, x ho

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 ty nang x hoi. hieu va cac ((xuc va) or (duc va)) dinh ((di cua) or (le cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang x hoi. hieu va cac ((xuc va) OR (duc va)) dinh ((di cua) OR (le cua)) te.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang x hoi. hieu va cac ((xuc va) or (duc va)) dinh ((di cua) or (le cua)) te*.