Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
cua viet » ca viet, hoa viet, cua vat
hieu van » hieu va, thien van, lieu va
luc tam » luc tai, luc lam, luat tam
hai cua » thai cua, dai cua, hoi cua
te sach » toc sach
sach ly » sach y, sach lo, sach ty
van bao » van ban, van dao
ly nang » ky nang, ly hang, ly vang
luc tan » luc tai, luc van, luc canh
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 van bao ((((luc tan) OR (luc tam))) or (duc tan)) thanh hai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang x hoi. hieu van bao ((((luc tan) OR (luc tam))) OR (duc tan)) thanh hai cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly nang x hoi. hieu van bao ((((luc tan) OR (luc tam))) or (duc tan)) thanh hai cua viet".
• Adding a wildcard symbol may retrieve word variants: te sach ly nang x hoi. hieu van bao ((((luc tan) OR (luc tam))) or (duc tan)) thanh hai cua viet*.