Perhaps you should try some spelling variations:
xanh hanh » danh thanh, ban hanh, van hanh
toc sach » hoc sach, thuoc sach, nuoc sach
duc xanh » duc anh, duc manh, duc hanh
hieu van » hieu va, thien van, lieu va
doc sach » hoc sach, nuoc sach, dac sac
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
cao duc » dao duc, cao suc, giao duc
van cao » van dao, van bao, van hao
vai va » mai va, dai va, hai va
vi va » vi van, vu va, bi va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) or (doc sach)) ty nang xa hoi. hieu van cao duc xanh hanh ((vi va) OR (vai va)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) ty nang xa hoi. hieu van cao duc xanh hanh ((vi va) OR (vai va)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) or (doc sach)) ty nang xa hoi. hieu van cao duc xanh hanh ((vi va) OR (vai va)) triet*".