Perhaps you should try some spelling variations:
hieu vien » hieu viec, lieu vien, thieu nien
hieu hien » bieu hien, dieu hien, chieu chien
thi hong » thi cong, thi phuong, thi hanh
hong cho » phong cho, huong cho, dong cho
van hanh » van thanh, ban hanh, van anh
sach thi » sach thu, sach tai, sach thieu
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
te sach » toc sach
cho hoc » co hoc, khoa hoc
vi cua » vai cua
di cua » dai cua, doi cua, de 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 thi hong cho hoc. ((hieu vien) or (hieu hien)) cac xuc van hanh ((vi cua) OR (di cua)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thi hong cho hoc. ((hieu vien) OR (hieu hien)) cac xuc van hanh ((vi cua) OR (di cua)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thi hong cho hoc. ((hieu vien) or (hieu hien)) cac xuc van hanh ((vi cua) OR (di cua)) cau*".