Perhaps you should try some spelling variations:
chua tri » chua trieu, chua tivi, huu tri
dung hai » dung tai, dung sai, dung nhan
van hanh » van thanh, ban hanh, van anh
sach ky » sac ky, sach y, sach ty
chu tri » chu thi, chu tai, cu tri
hanh va » hang va, hanh vi
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
te sach » toc sach
hieu ve » hieu va, hieu van
dung ha » dung va, dung he, dung khoa
ve cam » ve cham, ve cac, va cam

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 ((dung hai) OR (dung ha)) hoi. hieu ve cam duc van hanh va ((chu tri) or (chua tri))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((dung hai) OR (dung ha)) hoi. hieu ve cam duc van hanh va ((chu tri) OR (chua tri))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((dung hai) OR (dung ha)) hoi. hieu ve cam duc van hanh va ((chu tri) or (chua tri))*".