Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
hanh dao » lanh dao, thanh dat, thanh dam
van hanh » van thanh, ban hanh, van anh
vien cac » vien bach, vien dai, vien da
sach ty » sach y, sach thu, xach tay
lang xa » lang ha, dang xay, lang van
sach tu » sach thu, cach tu, sach xu
sach uu » sach luu, sach xu, sach dau
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
dao cua » dai cua, day cua, dan cua
cua su » qua su

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 tu) OR (sach uu))) or (sach ty)) lang xa hoi. hieu vien cac xuc van hanh dao cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((((sach tu) OR (sach uu))) OR (sach ty)) lang xa hoi. hieu vien cac xuc van hanh dao cua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((((sach tu) OR (sach uu))) or (sach ty)) lang xa hoi. hieu vien cac xuc van hanh dao cua su".
• Adding a wildcard symbol may retrieve word variants: toc ((((sach tu) OR (sach uu))) or (sach ty)) lang xa hoi. hieu vien cac xuc van hanh dao cua su*.