Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
su triet » su viet, su tien, ve triet
thanh vi » hanh vi, thanh va, thanh ve
nhan luc » nang luc
sach ky » sac ky, sach y, sach kem
luc van » luoc van, luu van, duc van
hieu va » hieu qua
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
vi su » va su, ve su, ki su

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 ky) OR (sach ty)) nang xa hoi. ((hieu va) or (lieu va)) nhan luc van thanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) nang xa hoi. ((hieu va) OR (lieu va)) nhan luc van thanh vi su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach ty)) nang xa hoi. ((hieu va) or (lieu va)) nhan luc van thanh vi su triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sach ty)) nang xa hoi. ((hieu va) or (lieu va)) nhan luc van thanh vi su triet*.