Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cau tren » cu tren, dau tren, ca tren
thanh ve » hanh ve, thanh va, thanh vien
sach ty » sach y, sach thu, xach tay
xuc van » duc van, luc van, vuc van
hieu vu » hieu va, hieu ve, hieu su
nang xa » nang x, lang xa, nang ma
sach tu » sach thu, cach tu, sach uu
lang ha » long ha
vu cam » vu cham, vu cao, va cam
ve cau » ke cau, va cau, ve cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach ty) OR (sach tu)) ((nang xa) or (lang ha)) hoi. hieu vu cam xuc van thanh ve cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ty) OR (sach tu)) ((nang xa) OR (lang ha)) hoi. hieu vu cam xuc van thanh ve cau tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ty) OR (sach tu)) ((nang xa) or (lang ha)) hoi. hieu vu cam xuc van thanh ve cau tren*".