Perhaps you should try some spelling variations:
thieu nien » thien nhien
nien coc » nien cong, vien cac, dien cuc
nang xa » nang x, lang xa, nang ma
luu van » cuu van, luan van, luu hanh
dai va » mai va
vai va » mai va, hai va, lai va
te sai » te tai, te bai, te lai
sai ky » sac ky
loc va » hoc va, luc 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 sai ky nang xa hoi. thieu nien coc ((loc va) or (luu van)) hanh ((vai va) OR (dai va)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky nang xa hoi. thieu nien coc ((loc va) OR (luu van)) hanh ((vai va) OR (dai va)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky nang xa hoi. thieu nien coc ((loc va) or (luu van)) hanh ((vai va) OR (dai va)) triet".
• Adding a wildcard symbol may retrieve word variants: te sai ky nang xa hoi. thieu nien coc ((loc va) or (luu van)) hanh ((vai va) OR (dai va)) triet*.