Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cam » vien cac, vien cao, vien nam
vu sach » vu bach, su sach, vu khach
truc va » thuc va, thuc vat, trung va
lai cua » hai cua, lai chau, thai cua
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y nang x hoi. hieu vien cam ((truc va) or (tuc xa)) hanh ((lai cua) or (dai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang x hoi. hieu vien cam ((truc va) OR (tuc xa)) hanh ((lai cua) OR (dai cua)) triet.
• Adding a wildcard symbol may retrieve word variants: vu sach y nang x hoi. hieu vien cam ((truc va) or (tuc xa)) hanh ((lai cua) or (dai cua)) triet*.