Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lam » thanh lap, hanh kem, hanh va
hanh lai » hanh tai, thanh lap, thanh loi
dau truc » cau truc, dai truc, doan truc
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
truc va » thuc va, thuc vat, trung va
sach ty » sach tu, sach thu, xach tay
va dau » 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: tu ((sach y) or (sach ty)) nang xa hoi. hieu va dau truc va ((hanh lai) OR (hanh lam)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach y) OR (sach ty)) nang xa hoi. hieu va dau truc va ((hanh lai) OR (hanh lam)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach y) or (sach ty)) nang xa hoi. hieu va dau truc va ((hanh lai) OR (hanh lam)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach y) or (sach ty)) nang xa hoi. hieu va dau truc va ((hanh lai) OR (hanh lam)) cua triet*.