Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
hieu cua » hieu qua, dieu cua, bieu cua
cau tren » cu tren, dau tren, ca tren
nang co » nang doc, nang noi, nang hoc
cac xuc » cam xuc, cac nuoc, chat xuc
va danh » va dinh, va dan, va hanh
cuu tre » cua tre, cau treo
lanh y » anh y, hanh y, lanh lay
xuc va » duc va, tuc va, luc 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 lanh y ((nang co) or (nang cao)) hoi. hieu cua cac xuc va danh cho ((cuu tre) OR (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat lanh y ((nang co) OR (nang cao)) hoi. hieu cua cac xuc va danh cho ((cuu tre) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat lanh y ((nang co) or (nang cao)) hoi. hieu cua cac xuc va danh cho ((cuu tre) OR (cau tren))".
• Adding a wildcard symbol may retrieve word variants: thuat lanh y ((nang co) or (nang cao)) hoi. hieu cua cac xuc va danh cho ((cuu tre) OR (cau tren))*.