Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
thanh tri » thanh tra, chinh tri, thanh hai
hieu van » hieu va, thien van, lieu va
hoc sac » hoc sach, hoc cac, hoc mac
nang ma » tang ma, sang ma, nang cao
lam xuc » lam duoc
cua tu » cua tuc, cua su, cua cu
sac ky » cac ky, sai ky
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: hoc sac ky nang ma hoi. hieu van ((lam xuc) or (cam xuc)) van ((thanh tri) OR (thanh tai)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sac ky nang ma hoi. hieu van ((lam xuc) OR (cam xuc)) van ((thanh tri) OR (thanh tai)) cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sac ky nang ma hoi. hieu van ((lam xuc) or (cam xuc)) van ((thanh tri) OR (thanh tai)) cua tu".
• Adding a wildcard symbol may retrieve word variants: hoc sac ky nang ma hoi. hieu van ((lam xuc) or (cam xuc)) van ((thanh tri) OR (thanh tai)) cua tu*.