Perhaps you should try some spelling variations:
thien van » thi van
va benh » tai benh, gay benh, cac benh
cam duc » cam xuc, cao duc, pham duc
sach ky » sach y, sach ty, sach kem
van cam » van nam, van lam, van cau
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
o benh » so benh, hoc benh, soc benh
vi cua » vai cua, di cua

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 ky) OR (sac ky)) nang xa hoi. thien van cam duc ((o benh) or (va benh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sac ky)) nang xa hoi. thien van cam duc ((o benh) OR (va benh)) vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) OR (sac ky)) nang xa hoi. thien van cam duc ((o benh) or (va benh)) vi cua tre*".