Perhaps you should try some spelling variations:
thanh tri » thanh tra, thanh tai, chinh tri
hieu van » thien van, lieu va, hieu ve
chat luc » chat xuc, chat lua, nhan luc
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
luc va » duc va, tuc va, loc va
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang xa hoi. ((hieu van) or (hieu va)) chat luc va thanh tri va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. ((hieu van) OR (hieu va)) chat luc va thanh tri va thiet.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. ((hieu van) or (hieu va)) chat luc va thanh tri va thiet*.