Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh tranh » canh tranh, hanh trang, lanh tranh
hoc chieu » hoc thieu, ho chieu, hoc dieu
qua trong » quan trong, qua trinh, qua song
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan cao » toan cao, juan cao, quang cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (hoc hien)) sach - ((hanh tranh) OR (hanh trinh)) qua trong cong van tuan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc hien)) sach - ((hanh tranh) OR (hanh trinh)) qua trong cong van tuan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (hoc hien)) sach - ((hanh tranh) OR (hanh trinh)) qua trong cong van tuan cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc hien)) sach - ((hanh tranh) OR (hanh trinh)) qua trong cong van tuan cao*.