Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hieu vien » hieu viec, thieu nien, hieu tieng
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
tuc va » thuc va, truc va, tuc xa
di cua » doi cua, de cua, do 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 ly nang xa hoi. ((hieu vien) or (hieu hien)) cam tuc va hanh ((di cua) or (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly nang xa hoi. ((hieu vien) OR (hieu hien)) cam tuc va hanh ((di cua) OR (dai cua)) te.
• Adding a wildcard symbol may retrieve word variants: tu sach ly nang xa hoi. ((hieu vien) or (hieu hien)) cam tuc va hanh ((di cua) or (dai cua)) te*.