Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
dai tren » dat tren, dau tren, dan tren
lang ha » long ha
xuc van » duc van, luc van, xuc ban
vuc van » duc van, luc van, thuc van
lang xa » dang xay, lang van
hanh su » hanh sua, hinh su, hanh tu
su dai » sau dai, si dai, su tai
va cau » van cau, va cac, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach y ((lang xa) or (lang ha)) hoi. lieu va cau ((xuc van) or (vuc van)) hanh su dai tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y ((lang xa) OR (lang ha)) hoi. lieu va cau ((xuc van) OR (vuc van)) hanh su dai tren.
• Adding a wildcard symbol may retrieve word variants: thuat sach y ((lang xa) or (lang ha)) hoi. lieu va cau ((xuc van) or (vuc van)) hanh su dai tren*.