Perhaps you should try some spelling variations:
hanh dien » nhanh dien, hang dien, danh dien
toc sach » hoc sach, doc sach, thuoc sach
tham soc » cham soc, tham nuoc, thai son
dien cuc » dien tu, dieu cua, vien cac
sang ma » tang ma, nang ma, sang tao
sach vu » sach va, sach tu, sach uu
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
va hanh » van hanh, va thanh, va danh
nang xa » nang x, lang xa, nang ma
soc va » hoc va, loc va, doc va
cuc te » cua te, cuc thue, cuc tieu

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 vu ((nang xa) or (sang ma)) hoi. hieu va tham soc va hanh dien cuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach vu ((nang xa) OR (sang ma)) hoi. hieu va tham soc va hanh dien cuc te.
• Adding a wildcard symbol may retrieve word variants: toc sach vu ((nang xa) or (sang ma)) hoi. hieu va tham soc va hanh dien cuc te*.