Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chau tinh » cuu tinh, ha tinh, cua tinh
trong van » trong cac
hoc chau » hoc chat, moc chau, hoc cau
vat dung » van dung, viet dung, mat duong
va dung » van dung, va duong, va ung
ban ca » ban cua, ban can, ban cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chau tinh - hanh trinh ((va dung) or (vat dung)) trong van ban ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chau tinh - hanh trinh ((va dung) OR (vat dung)) trong van ban ca.
• Adding a wildcard symbol may retrieve word variants: hoc chau tinh - hanh trinh ((va dung) or (vat dung)) trong van ban ca*.