Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
tru nang » tra nang, tri nang, truc nano
nang cho » nang chon, ngang cho, nang cao
hieu van » hieu va, thien van, lieu va
sach tru » sach truc, sach thu, sach tu
te sach » toc sach
hai cua » thai cua, hoi cua, lai cua
vai cua » lai cua, bai cua, mai cua
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
van cac » van hac, van cau, van bac
cho hoc » co hoc, khoa hoc

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 tru nang cho hoc. hieu van cac xuc van hanh ((((vai cua) OR (hai cua))) or (dai cua)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tru nang cho hoc. hieu van cac xuc van hanh ((((vai cua) OR (hai cua))) OR (dai cua)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tru nang cho hoc. hieu van cac xuc van hanh ((((vai cua) OR (hai cua))) or (dai cua)) cau*".