Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
van tuan » van quan, van ban, anh tuan
tuan vi » quan vi, luan vi, quans vi
luc van » luoc van, luu van, duc van
cac luc » cau luc, coc luc, cac nuoc
hieu va » lieu va, hieu qua
hoc cac » hoc cao
cho hoc » co hoc, khoa hoc
cao hoc » co hoc, chat hoc
ty nang » ky nang, ty xang, ty hang
cua cau » cua cac, cua chu, cua cay
cac ty » cac ky, cac tu
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc cac ty nang ((cao hoc) or (cho hoc)). ((hieu van) or (hieu va)) cac luc van tuan vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc cac ty nang ((cao hoc) OR (cho hoc)). ((hieu van) OR (hieu va)) cac luc van tuan vi cua cau*.