Perhaps you should try some spelling variations:
phat luc » nhan luc, phat huy, chat lua
tu sach » thu sach, su sach, te sach
ty nang » ky nang, ty xang, ly nang
ty hang » ly hang, ty xang, thi hang
hieu va » lieu va, hieu qua
va dinh » van dinh, va kinh, va tinh
dinh ve » dinh ket, dinh van
luu tre » luu tru, cuu tre, luy tre
luc va » duc va, tuc va, loc va
ve luu » ke luu, vi luu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((ty nang) or (ty hang)) xa hoi. hieu va phat luc va dinh ve luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ty hang)) xa hoi. hieu va phat luc va dinh ve luu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) or (ty hang)) xa hoi. hieu va phat luc va dinh ve luu tre*.