Perhaps you should try some spelling variations:
thien van » thi van
hieu van » lieu va, hieu ve
thanh vi » hanh vi, thanh va, thanh ve
xa thanh » va thanh, ha thanh, ta thanh
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu
nam tu » nam thu, nam thuc
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
tu xa » tu xay, tu va, te xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ma hoi. ((((hieu van) or (hieu va))) or (thien van)) nam tu xa thanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoi. ((((hieu van) OR (hieu va))) OR (thien van)) nam tu xa thanh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. ((((hieu van) or (hieu va))) or (thien van)) nam tu xa thanh vi cua tu*.