Perhaps you should try some spelling variations:
chat triet » chet triet, phat trien, chat thien
thanh lap » thanh san, phan lap, thanh hai
hanh lam » hanh kem, hanh va, dinh lam
hieu van » hieu va, thien van, lieu va
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
van bac » van ban, van bao, van hac
xuc va » duc va, tuc va, luc va
sac ky » cac ky, sai ky

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