Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
hieu van » thien van, lieu va, hieu ve
tuan bai » toan bai, tran bai, tuan tai
van tuan » van quan, van ban, anh tuan
bai cua » ban cua, dai cua, bai ca
duc van » duc va, duc tan, duc manh
bao duc » dao duc, bao luc, cao duc
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, mang may
lanh y » anh y, hanh y, lanh lay

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 ma) or (nang cao)) hoi. ((hieu va) or (hieu van)) bao duc van tuan bai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat lanh y ((nang ma) OR (nang cao)) hoi. ((hieu va) OR (hieu van)) bao duc van tuan bai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuat lanh y ((nang ma) or (nang cao)) hoi. ((hieu va) or (hieu van)) bao duc van tuan bai cua tre*.