Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hieu thien » hieu hien, chieu chien, dieu khien
hach nuoc » sach nuoc, hoc nuoc, cac nuoc
so sach » so sanh, co sach, hoc sach
bo sach » co sach, hoc sach
nang xa » nang x, lang xa, nang ma
va dinh » van dinh, va kinh, va tinh
dinh di » dinh du, dinh vi, danh di
cua tuc » cua duc, cua thuoc, luat tuc
cua tu » cua su, cua cu, cua te

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (bo sach)) ky nang xa hoi. hieu thien hach nuoc va dinh di ((cua tu) OR (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (bo sach)) ky nang xa hoi. hieu thien hach nuoc va dinh di ((cua tu) OR (cua tuc))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (bo sach)) ky nang xa hoi. hieu thien hach nuoc va dinh di ((cua tu) OR (cua tuc))*".