Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cac truc » cau truc, cac trung, sach truc
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
cac tru » ca tru, cac tro, cac thu
va danh » va dinh, va dan, va hanh
danh va » doanh va, hanh va, anh va
sai ky » sac ky
va cua » va chua, via cua, ca cua

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) or (sai ky)) nang xa hoi. hieu va ((cac truc) OR (cac tru)) va danh va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sai ky)) nang xa hoi. hieu va ((cac truc) OR (cac tru)) va danh va cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (sai ky)) nang xa hoi. hieu va ((cac truc) OR (cac tru)) va danh va cua triet*".