Perhaps you should try some spelling variations:
van tuan » van quan, van ban, anh tuan
tuan soc » quan so, xuan son, dan soc
dinh cuu » dinh chi
vinh cuu » sinh cua, dinh cu, tinh cua
hieu van » hieu va, thien van, lieu va
va hanh » van hanh, va thanh, va danh
nang xa » nang x, lang xa, nang ma
tre dan » tre dang, tre can, tre dai
soc va » hoc va, loc va, doc va
te dan » te danh, ke dan, le dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te dan) OR (tre dan)) ky nang xa hoi. hieu van tuan soc va hanh ((vinh cuu) or (dinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te dan) OR (tre dan)) ky nang xa hoi. hieu van tuan soc va hanh ((vinh cuu) OR (dinh cuu)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te dan) OR (tre dan)) ky nang xa hoi. hieu van tuan soc va hanh ((vinh cuu) or (dinh cuu)) tre".
• Adding a wildcard symbol may retrieve word variants: ((te dan) OR (tre dan)) ky nang xa hoi. hieu van tuan soc va hanh ((vinh cuu) or (dinh cuu)) tre*.