Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cam » vien cac, vien cao, vien nam
lv nang » ly nang
cam tuc » cam xuc, cam tu, nam thuc
va hanh » van hanh, va thanh, va danh
vai cua » hai cua, lai cua, bai cua
su sach » so sach, vu sach
v nang » va nang, vu nang, van nang
tuc va » thuc va, truc va, tuc xa

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 ((v nang) or (lv nang)) xa hoi. hieu vien cam tuc va hanh ((vai cua) or (dai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((v nang) OR (lv nang)) xa hoi. hieu vien cam tuc va hanh ((vai cua) OR (dai cua)) triet.
• Adding a wildcard symbol may retrieve word variants: su sach ((v nang) or (lv nang)) xa hoi. hieu vien cam tuc va hanh ((vai cua) or (dai cua)) triet*.