Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
toc sach » hoc sach, doc sach, thuoc sach
vien cam » vien cac, vien cao, vien nam
van hanh » van thanh, ban hanh, van anh
hanh noi » ha noi, hanh vi, nang noi
sach lo » sach dao, sach doi, sach hoi
nang ma » tang ma, sang ma, nang cao
lang xa » lang ha, dang xay, lang van
xuc van » duc van, luc van, vuc van
noi cua » hoi cua, doi cua, moi cua
cua tuc » cua duc, cua tu, cua thuoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach lo ((nang ma) or (lang xa)) hoi. hieu vien cam xuc van hanh noi cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach lo ((nang ma) OR (lang xa)) hoi. hieu vien cam xuc van hanh noi cua tuc.
• Adding a wildcard symbol may retrieve word variants: toc sach lo ((nang ma) or (lang xa)) hoi. hieu vien cam xuc van hanh noi cua tuc*.