Perhaps you should try some spelling variations:
toan hanh » toan thanh, tran hanh, toan doanh
toan anh » tuan anh, tran anh, toan doanh
te sach » toc sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va giao » van giao, va giai, va gia
vai cua » dai cua, lai cua, bai cua
hai cua » thai cua, dai cua, hoi cua

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 ly nang xa hoi. hieu va giao duc ((toan hanh) OR (toan anh)) ((vai cua) or (hai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang xa hoi. hieu va giao duc ((toan hanh) OR (toan anh)) ((vai cua) OR (hai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly nang xa hoi. hieu va giao duc ((toan hanh) OR (toan anh)) ((vai cua) or (hai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ly nang xa hoi. hieu va giao duc ((toan hanh) OR (toan anh)) ((vai cua) or (hai cua)) tre*.