Perhaps you should try some spelling variations:
va trien » va truyen, va thiet, va tuyen
ve cham » va cham, ve chat, vu cham
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hanh te » hanh tu, hanh ve, hanh de
va hanh » van hanh, va thanh, va danh
luc va » duc va, tuc va, loc va
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cam » ve cac, va cam, ve cau
ve cai » va cai, ve cac, ve tai
te va » tu 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 cam) OR (ve cai))) or (ve cham)) luc va hanh te va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky lang xa hoi. hieu ((((ve cam) OR (ve cai))) OR (ve cham)) luc va hanh te va trien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky lang xa hoi. hieu ((((ve cam) OR (ve cai))) or (ve cham)) luc va hanh te va trien".
• Adding a wildcard symbol may retrieve word variants: te sac ky lang xa hoi. hieu ((((ve cam) OR (ve cai))) or (ve cham)) luc va hanh te va trien*.