Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
hieu vien » hieu hien, hieu viec, thieu nien
cau tren » cu tren, dau tren, ca tren
va thanh » gia thanh, ban thanh, va tinh
cap nuoc » dat nuoc
vien cap » vien cac, vien cao, vien can
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, sach thu
cuu tre » cua tre, cau treo
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach ty) or (sac ky)) lang xa hoi. hieu vien cap nuoc va thanh van ((cuu tre) OR (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ty) OR (sac ky)) lang xa hoi. hieu vien cap nuoc va thanh van ((cuu tre) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ty) or (sac ky)) lang xa hoi. hieu vien cap nuoc va thanh van ((cuu tre) OR (cau tren))".
• Adding a wildcard symbol may retrieve word variants: vu ((sach ty) or (sac ky)) lang xa hoi. hieu vien cap nuoc va thanh van ((cuu tre) OR (cau tren))*.