Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
chay tren » thai tren, ca tren, cau tren
hieu van » hieu va, thien van, lieu va
tinh lam » trinh lam, dinh lam, tinh lao
chau tre » chau tho, cho tre, cau tra
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va
va tinh » may tinh
san ky » sang ky, van ky, dan ky
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat san ky lang xa hoi. ((hieu ve) or (hieu van)) coc luc va tinh lam ((chau tre) OR (chay tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat san ky lang xa hoi. ((hieu ve) OR (hieu van)) coc luc va tinh lam ((chau tre) OR (chay tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat san ky lang xa hoi. ((hieu ve) or (hieu van)) coc luc va tinh lam ((chau tre) OR (chay tren))".
• Adding a wildcard symbol may retrieve word variants: thuat san ky lang xa hoi. ((hieu ve) or (hieu van)) coc luc va tinh lam ((chau tre) OR (chay tren))*.