Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
ve triet » va trien, su triet
tru nang » tra nang, tri nang, truc nano
luc van » luoc van, luu van, duc van
suc van » su van, duc van, sac van
te sach » toc sach
tu nang » tu nong, tu nano, tu lang
dai ve » dap ve, dau ve, dai va
va cao » va cac, va co, va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((tu nang) or (tru nang)) xa hoi. lieu va cao ((suc van) OR (luc van)) thanh dai ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tu nang) OR (tru nang)) xa hoi. lieu va cao ((suc van) OR (luc van)) thanh dai ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((tu nang) or (tru nang)) xa hoi. lieu va cao ((suc van) OR (luc van)) thanh dai ve triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((tu nang) or (tru nang)) xa hoi. lieu va cao ((suc van) OR (luc van)) thanh dai ve triet*.