Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
thu sach » thuat sach, thuoc sach, thu hoach
vien cam » vien cac, vien cao, vien nam
tu sach » su sach, te sach, tu cach
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
v nang » va nang, vu nang, van nang
xuc va » duc va, tuc va, luc va
y nang » ky nang, ly nang, may nang
di cua » dai cua, doi cua, de cua
cua te » cua tu

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 (thu sach)) ((y nang) or (v nang)) xa hoi. hieu vien cam xuc va hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ((y nang) OR (v nang)) xa hoi. hieu vien cam xuc va hanh di cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ((y nang) or (v nang)) xa hoi. hieu vien cam xuc va hanh di cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ((y nang) or (v nang)) xa hoi. hieu vien cam xuc va hanh di cua te*.