Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
thien van » thi van
va triet » va thiet, va trien, ve triet
sach ky » sach y, sach ty, sach kem
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
cac ly » cac ky, cac le, cam ly
ly ban » uy ban, lo ban, ly bai
vai va » mai va, dai va, hai va

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

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