Perhaps you should try some spelling variations:
van nang » van quang, van ban, van dong
van hanh » van thanh, ban hanh, van anh
bac van » bach van, cac van, ban van
nang xa » nang x, lang xa, nang ma
duc van » duc va, duc tan, duc manh
tu bac » tu ban, tu cac, tu bat
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
vi su » va su, ki su, oi su
ve su » va su

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu bac van nang xa hoi. hieu ((ve cam) or (va cam)) duc van hanh ((vi su) or (ve su)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu bac van nang xa hoi. hieu ((ve cam) OR (va cam)) duc van hanh ((vi su) OR (ve su)) triet.
• Adding a wildcard symbol may retrieve word variants: tu bac van nang xa hoi. hieu ((ve cam) or (va cam)) duc van hanh ((vi su) or (ve su)) triet*.