Perhaps you should try some spelling variations:
hieu cac » hieu luc, hieu va, hieu van
vien cac » vien bach, vien dai, vien da
hanh van » thanh van, khanh van, hanh va
tu tieng » luc tieng, tu tuong, tu trong
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va
van tu » van thu, van du, ban tu

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 ky nang ma hoi. thien ((hieu cac) or (vien cac)) xuc va hanh van tu tieng~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. thien ((hieu cac) OR (vien cac)) xuc va hanh van tu tieng.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. thien ((hieu cac) or (vien cac)) xuc va hanh van tu tieng*.