Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vu khach » vu khanh, vu khac, vay khach
vien cac » vien bach, vien dai, vien da
cac giai » tac gia, cuu giai, hoc giai
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
giai va » giai van, gia va, giai ma
va danh » va dinh, va dan, va hanh
vai cua » hai cua, lai cua, bai cua

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) or (vu khach)) ky nang xa hoi. hieu vien cac giai va danh ((vai cua) or (dai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (vu khach)) ky nang xa hoi. hieu vien cac giai va danh ((vai cua) OR (dai cua)) triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (vu khach)) ky nang xa hoi. hieu vien cac giai va danh ((vai cua) or (dai cua)) triet*.