Perhaps you should try some spelling variations:
hieu thien » hieu hien, chieu chien, dieu khien
thien cac » hien cac, thien cau, thieu cac
dieu cua » dieu tra
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va tinh » may tinh
cac tu » cac thu, cach tu, cac du
de cua » le cua, te cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang xa hoi. hieu thien cac tu va tinh ((de cua) OR (dieu cua)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu thien cac tu va tinh ((de cua) OR (dieu cua)) triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu thien cac tu va tinh ((de cua) OR (dieu cua)) triet*.