Perhaps you should try some spelling variations:
nang cho » nang chon, ngang cho, nang cao
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
sach tu » sach thu, cach tu, sach uu
sach ty » sach y, sach thu, xach tay
cho hoc » co hoc, khoa hoc
cac xuc » cam xuc, cac nuoc, chat xuc
cua cau » cua cac, cua chu, cua cay
vi cua » vai cua, di 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 tu) or (sach ty)) nang cho hoc. lieu va cac xuc ((van hanh) OR (ban hanh)) vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tu) OR (sach ty)) nang cho hoc. lieu va cac xuc ((van hanh) OR (ban hanh)) vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach tu) or (sach ty)) nang cho hoc. lieu va cac xuc ((van hanh) OR (ban hanh)) vi cua cau*".