Perhaps you should try some spelling variations:
dinh chi » dinh thi, dinh tri, dinh moi
toc sach » hoc sach, doc sach, thuoc sach
va hanh » van hanh, va thanh, va danh
va tinh » may tinh
cao suc » cao su, cao duc
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
chi tre » choi tre, cho tre, chi tro
ve cao » va cao, ve bao, ve cac

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) OR (toc sach)) ky nang xa hoi. hieu ve cao suc ((va hanh) or (va tinh)) dinh chi tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky nang xa hoi. hieu ve cao suc ((va hanh) OR (va tinh)) dinh chi tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ky nang xa hoi. hieu ve cao suc ((va hanh) or (va tinh)) dinh chi tre*".