Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
van thanh » ban thanh, van tuan
hieu van » thien van, lieu va, hieu ve
lanh ty » lanh tu, canh tay, lanh tho
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
cac dat » cac dan, cai dat, cac dai
va danh » va dinh, va dan, va hanh
ma hoi » mai hoi, xa hoi, ma hoa

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 nang ma hoi. ((hieu van) or (hieu va)) cac dat ((van thanh) or (va danh)) dai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat lanh ty nang ma hoi. ((hieu van) OR (hieu va)) cac dat ((van thanh) OR (va danh)) dai cua vat.
• Adding a wildcard symbol may retrieve word variants: thuat lanh ty nang ma hoi. ((hieu van) or (hieu va)) cac dat ((van thanh) or (va danh)) dai cua vat*.