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