Perhaps you should try some spelling variations:
nang cho » nang chon, ngang cho, nang cao
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
te sach » toc sach
doi cua » dai cua, hoi cua
hieu va » hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
sach ty » sach y, sach tu, sach thu
cho hoc » co hoc, khoa hoc
ty nang » ky nang, ty xang, ty hang
cua cau » cua cac, cua chu, cua cay

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