Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
tu sach » thu sach, su sach, te sach
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
sach ly » sach y, sach lo, sach ty
de cua » le cua, te cua, dieu cua
xuc va » duc va, luc va, xac va
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: tu sach ly nang xa hoi. hieu vien cac ((xuc va) or (tuc va)) hanh ((dai cua) or (de cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly nang xa hoi. hieu vien cac ((xuc va) OR (tuc va)) hanh ((dai cua) OR (de cua)) te.
• Adding a wildcard symbol may retrieve word variants: tu sach ly nang xa hoi. hieu vien cac ((xuc va) or (tuc va)) hanh ((dai cua) or (de cua)) te*.