Perhaps you should try some spelling variations:
thieu nien » thien nhien
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh tai, hanh van
nien cac » vien cac, dien cac, bien cac
dang xay » dang van, van xay
cac luc » cau luc, coc luc, cac nuoc
luc van » luoc van, luu van, duc van
lang xa » lang ha, lang van
hanh va » hang va, hanh vi
sac ky » cac ky, sai ky
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky ((lang xa) OR (dang xay)) hoi. thieu nien cac luc van ((hanh vai) or (hanh va)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((lang xa) OR (dang xay)) hoi. thieu nien cac luc van ((hanh vai) OR (hanh va)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((lang xa) OR (dang xay)) hoi. thieu nien cac luc van ((hanh vai) or (hanh va)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sac ky ((lang xa) OR (dang xay)) hoi. thieu nien cac luc van ((hanh vai) or (hanh va)) cua triet*.