Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
quy long » huy luong, quan long, cuu long
hieu van » hieu va, thien van, lieu va
sy long » sy luong
van cam » van nam, van lam, van cau
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
ha hoi » hoa hoi, ha noi, xa hoi
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
va cua » va chua, via cua, ca cua

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 ((sy long) OR (quy long)) ha hoi. hieu van cam ((xuc va) or (luc va)) hanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat lanh ((sy long) OR (quy long)) ha hoi. hieu van cam ((xuc va) OR (luc va)) hanh va cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat lanh ((sy long) OR (quy long)) ha hoi. hieu van cam ((xuc va) or (luc va)) hanh va cua tre*".