Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
bat thanh » ban thanh, bac thanh, dat thanh
su triet » su viet, su tien, ve triet
van lam » van nam
luc bat » suc bat, luc nhat, luat bat
te sach » toc sach
sach ty » sach y, sach tu, sach thu
van cam » van nam, van cau, ban cam
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
van dam » van nam, van dao, van dau
dai su » dai sua, dai so, dan su

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 ty nang xa hoi. hieu ((((van cam) OR (van dam))) or (van lam)) luc bat thanh dai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. hieu ((((van cam) OR (van dam))) OR (van lam)) luc bat thanh dai su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. hieu ((((van cam) OR (van dam))) or (van lam)) luc bat thanh dai su triet".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu ((((van cam) OR (van dam))) or (van lam)) luc bat thanh dai su triet*.