Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
dang xay » dang van, van xay
hieu van » hieu va, thien van, lieu va
tinh vai » tinh va, tinh hai, tinh bai
lanh ty » lanh tu, canh tay, lanh tho
ty dang » ty xang, ky dang, ty hang
xay hoi » xa hoi, tay hoi, cay phoi
van dat » van dao, van dau, dan dat
va tinh » may tinh
vai sua » va sua, dai sua, vai cua
chua » cua, chu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat lanh ty dang xay hoi. hieu van dat (nuoc or duoc) va tinh vai sua chua~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat lanh ty dang xay hoi. hieu van dat (nuoc OR duoc) va tinh vai sua chua.
• Adding a wildcard symbol may retrieve word variants: thuat lanh ty dang xay hoi. hieu van dat (nuoc or duoc) va tinh vai sua chua*.