Perhaps you should try some spelling variations:
cham loc » chon loc, cham o, hau loc
va hanh » van hanh, va thanh, va danh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve va » ve van, te va, le va
ke va » te va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky lang xa hoi. hieu ve ((cham loc) OR (cham soc)) va hanh ((ve va) or (ke va)) trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky lang xa hoi. hieu ve ((cham loc) OR (cham soc)) va hanh ((ve va) OR (ke va)) trien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky lang xa hoi. hieu ve ((cham loc) OR (cham soc)) va hanh ((ve va) or (ke va)) trien".
• Adding a wildcard symbol may retrieve word variants: te sac ky lang xa hoi. hieu ve ((cham loc) OR (cham soc)) va hanh ((ve va) or (ke va)) trien*.