Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thieu sach » chieu sach, thien hach, hieu cach
quan chuan » quan chuyen, quan luan, quan cua
chuan chau » chuan chat, chuan ha, chua chay
hoc thieu » toc thieu, hoc hien
minh tuan » anh tuan
va phuong » cac phuong
cong quan » cuong quan, cong quang, tong quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sach - ((minh tuan) or (hanh trinh)) ((va phuong) OR (va thuong)) cong quan chuan chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((minh tuan) OR (hanh trinh)) ((va phuong) OR (va thuong)) cong quan chuan chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - ((minh tuan) or (hanh trinh)) ((va phuong) OR (va thuong)) cong quan chuan chau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((minh tuan) or (hanh trinh)) ((va phuong) OR (va thuong)) cong quan chuan chau*.