Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien dai » hien dai
dinh vai » dinh van, dinh vi, dinh va
te sach » toc sach
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
dai lao » dai lan, dai thao, dai luan
va dinh » van dinh, va kinh, va tinh
vai cua » dai cua, hai cua, lai cua
lao va » tao va, cao va, bao va
cua tu » cua tuc, cua su, cua cu

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 y ((nang xa) OR (nang ma)) hoi. hieu vien dai lao va dinh vai cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((nang xa) OR (nang ma)) hoi. hieu vien dai lao va dinh vai cua tu".
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang xa) OR (nang ma)) hoi. hieu vien dai lao va dinh vai cua tu*.