Perhaps you should try some spelling variations:
thinh duc » tinh duc, trinh duc, trinh duoc
thach duc » thach thuc, than duc
hanh hai » thanh hai, nhanh hai, hang hai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cao hoi » cau hoi, co hoi, cao hoc
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
hai cua » thai cua, dai cua, hoi cua
cua te » cua 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 cao hoi. hieu va ((thinh duc) or (thach duc)) va hanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang cao hoi. hieu va ((thinh duc) OR (thach duc)) va hanh hai cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang cao hoi. hieu va ((thinh duc) or (thach duc)) va hanh hai cua te*.