Perhaps you should try some spelling variations:
tan hanh » tan thanh, tang hanh, toan hanh
te sach » toc sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
hieu va » lieu va, hieu qua
va giao » van giao, va giai, va gia
lai cua » lai chau, thai cua
hai cua » thai cua, hoi cua, hai quan
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu va giao duc tan hanh ((lai cua) or (((hai cua) or (dai cua)))) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang x hoi. hieu va giao duc tan hanh ((lai cua) OR (((hai cua) OR (dai cua)))) tre.
• Adding a wildcard symbol may retrieve word variants: te sach ly nang x hoi. hieu va giao duc tan hanh ((lai cua) or (((hai cua) or (dai cua)))) tre*.