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
sach ky » sach ty, sach kem, sach hay
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
sac ky » cac ky, sai ky
vi cua » vai cua, di cua
cua cu » cua chu, cua cau, cua su

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

• If you are trying to use Boolean operators, they must be ALL CAPS: so ((((sach ky) OR (sac ky))) OR (sach y)) nang xa hoi. hieu thien hach nuoc va hanh vi cua cu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((((sach ky) OR (sac ky))) or (sach y)) nang xa hoi. hieu thien hach nuoc va hanh vi cua cu~".
• Adding a wildcard symbol may retrieve word variants: so ((((sach ky) OR (sac ky))) or (sach y)) nang xa hoi. hieu thien hach nuoc va hanh vi cua cu*.