Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
sang lap » sang tao, sang ma, sang tai
van dinh » van minh, van dich, xuan dinh
vien cam » vien cac, vien cao, vien nam
su sach » so sach, vu sach
va dinh » va kinh, va tinh, vu dinh
va danh » va dan, va hanh, dia danh
sach ky » sac ky, sach y, sach ty
lap hai » lap tai, lap lai, lap hoat
ky sang » ky nang, ky dang, ky tang
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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 sang lap hai. hieu vien cam xuc ((va danh) or (((va dinh) or (van dinh)))) vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky sang lap hai. hieu vien cam xuc ((va danh) OR (((va dinh) OR (van dinh)))) vi cua tu.
• Adding a wildcard symbol may retrieve word variants: su sach ky sang lap hai. hieu vien cam xuc ((va danh) or (((va dinh) or (van dinh)))) vi cua tu*.