Perhaps you should try some spelling variations:
hanh lam » thanh lap, hanh kem, hanh va
ve triet » va trien, su triet
sach ky » sac ky, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
cac tuc » cac toc, cac tu, cac tac
xa hanh » xa thanh, xa khanh, va hanh
lam ve » la ve, lam vu, nam ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach ky) OR (sach y)) nang xa hoi. ((hieu ve) or (hieu va)) cac tuc xa hanh lam ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ky) OR (sach y)) nang xa hoi. ((hieu ve) OR (hieu va)) cac tuc xa hanh lam ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ky) OR (sach y)) nang xa hoi. ((hieu ve) or (hieu va)) cac tuc xa hanh lam ve triet".
• Adding a wildcard symbol may retrieve word variants: so ((sach ky) OR (sach y)) nang xa hoi. ((hieu ve) or (hieu va)) cac tuc xa hanh lam ve triet*.