Perhaps you should try some spelling variations:
ve triet » va trien, su triet
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu va » lieu va
cam luc » cam xuc, cau luc
van anh » van thanh, tuan anh
x hoi » xa hoi, o hoi, x ho
gi ve » gia ve, gi de, gi he

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty nang x hoi. ((hieu va) or (hieu qua)) cam luc ((van anh) or (van minh)) gi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang x hoi. ((hieu va) OR (hieu qua)) cam luc ((van anh) OR (van minh)) gi ve triet.
• Adding a wildcard symbol may retrieve word variants: so sach ty nang x hoi. ((hieu va) or (hieu qua)) cam luc ((van anh) or (van minh)) gi ve triet*.