Perhaps you should try some spelling variations:
hoc tieng » hoc hien
trinh van » trinh han, trinh quan, trinh toan
dung cong » dung trong
tac chuan » tac quan, tac cua, tac can
chuan cau » chuan chau, chua cau, chuan chat
trinh va » trinh vat, trinh ve, trinh vi
cong tac » cong ty

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc tieng anh - hanh ((trinh va) or (trinh van)) dung cong tac chuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tieng anh - hanh ((trinh va) OR (trinh van)) dung cong tac chuan cau.
• Adding a wildcard symbol may retrieve word variants: hoc tieng anh - hanh ((trinh va) or (trinh van)) dung cong tac chuan cau*.