Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
thi nang » thi cong, ki nang, thi hanh
hieu van » hieu va, thien van, hieu ve
va thanh » gia thanh, ban thanh, va tinh
cua viet » ca viet, hoa viet, cua vat
te sach » toc sach
ty hang » ly hang, ty xang, thi hang
coc duc » hoc duc, coc luc, hoc duoc

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 hang) or (thi nang)) x ho. ((hieu van) OR (lieu va)) coc duc va thanh dai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty hang) OR (thi nang)) x ho. ((hieu van) OR (lieu va)) coc duc va thanh dai cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty hang) or (thi nang)) x ho. ((hieu van) OR (lieu va)) coc duc va thanh dai cua viet".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty hang) or (thi nang)) x ho. ((hieu van) OR (lieu va)) coc duc va thanh dai cua viet*.