Perhaps you should try some spelling variations:
ngang cho » nang cho, ngang tho, sang cho
cac nuoc » cap nuoc, dat nuoc, cua nuoc
ty ngang » ly ngan, te ngan, tu ngan
cac quoc » cac cuoc, cao quoc, han quoc
te sach » toc sach
van anh » van thanh, tuan anh, van minh
cua cau » cua cac, cua chu, cua cay
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
cho hoc » co hoc, khoa hoc
anh vi » hanh vi, anh va, anh ve
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 ty ngang cho hoc. hieu va ((cac quoc) or (((cac nuoc) OR (hoc nuoc)))) van anh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ngang cho hoc. hieu va ((cac quoc) OR (((cac nuoc) OR (hoc nuoc)))) van anh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ngang cho hoc. hieu va ((cac quoc) or (((cac nuoc) OR (hoc nuoc)))) van anh vi cua cau*".