Perhaps you should try some spelling variations:
nhan luc » nang luc
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
ve cham » va cham, ve chat, vu cham
duc van » duc tan, duc manh, duc phan
luc tre » duc tre, luy tre, duc tren
su sai » su tai, su hai, su dai
sai ky » sac ky
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ky lang xa hoi. hieu ((ve cham) or (ve cac)) ((duc van) or (duc va)) benh nhan luc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky lang xa hoi. hieu ((ve cham) OR (ve cac)) ((duc van) OR (duc va)) benh nhan luc tre.
• Adding a wildcard symbol may retrieve word variants: su sai ky lang xa hoi. hieu ((ve cham) or (ve cac)) ((duc van) or (duc va)) benh nhan luc tre*.