Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
thien hach » thien thanh, hien hanh
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
hieu cach » hieu cac, hieu ca, biet cach
cao nhung » cho nhung, cam nhung, cao chung
tung cao » nung cao, truong cao, trung cap
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((thien hach) or (hieu cach))) or (chieu sach)) - thanh tung cao nhung huong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thien hach) OR (hieu cach))) OR (chieu sach)) - thanh tung cao nhung huong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((((thien hach) or (hieu cach))) or (chieu sach)) - thanh tung cao nhung huong dan chan cau*.