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