Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
nuoc sach » nguoi sach, hoc sach, cuoc cach
toc sach » hoc sach, thuoc sach, toc san
hanh doi » thanh doi, hanh noi, hang doi
doc sach » hoc sach, dac sac, bo sach
van hanh » van thanh, ban hanh, van anh
vien cam » vien cac, vien cao, vien nam
doi cua » dai cua, hoi cua
xuc van » duc van, luc van, vuc van
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((toc sach) OR (nuoc sach))) or (doc sach)) ly nang xa hoi. hieu vien cam xuc van hanh doi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((toc sach) OR (nuoc sach))) OR (doc sach)) ly nang xa hoi. hieu vien cam xuc van hanh doi cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((toc sach) OR (nuoc sach))) or (doc sach)) ly nang xa hoi. hieu vien cam xuc van hanh doi cua tu".
• Adding a wildcard symbol may retrieve word variants: ((((toc sach) OR (nuoc sach))) or (doc sach)) ly nang xa hoi. hieu vien cam xuc van hanh doi cua tu*.