Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
dieu tra » dieu tri, kiem tra, dieu cua
tu cach » tu cac
cach tu » cach thuc
tu nang » tru nang, tu nong, tu nano
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
de cua » le cua, te cua, dieu cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach tu nang x hoi. hieu va cham duc va hanh ((de cua) or (dieu tra)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach tu nang x hoi. hieu va cham duc va hanh ((de cua) OR (dieu tra)) triet.
• Adding a wildcard symbol may retrieve word variants: tu cach tu nang x hoi. hieu va cham duc va hanh ((de cua) or (dieu tra)) triet*.