Perhaps you should try some spelling variations:
thi hang » thi hanh, thi nang, thi hong
van dinh » van minh, van dich, va dinh
su sach » so sach, vu sach
dinh di » dinh du, dinh vi, danh di
luc van » luoc van, luu van, duc van
cac luc » cau luc, coc luc, cac nuoc
hieu va » lieu va, hieu qua
ty hang » ly hang, ty xang, thu hang
ty nang » ky nang, ty xang, ly nang
di cua » dai cua, doi cua, de cua
cua te » cua tu

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