Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
thanh ve » hanh ve, thanh va, thanh vien
cong cho » dong cho, cong co, rong cho
hieu van » hieu va, thien van, lieu va
te sach » toc sach
cua cau » cua cac, cua chu, cua cay
sach ty » sach y, sach tu, sach thu
cac xuc » chat xuc, cac cuoc, cac quoc
cho hoc » co hoc, khoa hoc
ty cong » tay cong, te cong, tu cong
ve cua » le cua, de cua, te 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 cong cho hoc. hieu van ((((cac xuc) OR (cac nuoc))) or (cam xuc)) van thanh ve cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty cong cho hoc. hieu van ((((cac xuc) OR (cac nuoc))) OR (cam xuc)) van thanh ve cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty cong cho hoc. hieu van ((((cac xuc) OR (cac nuoc))) or (cam xuc)) van thanh ve cua cau*".