Perhaps you should try some spelling variations:
trinh tinh » trinh kinh, trinh tin, trinh dinh
nhanh mang » nhanh lang, hanh mang, nhanh quang
doc trinh » doc tinh, doi trinh, hoc trinh
qua trong » quan trong, qua trinh, qua song
mang qua » mang cua, mang vua, nang quan
cong tac » cong ty
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc trinh tinh - nhanh mang qua trong cong tac ((than cau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc trinh tinh - nhanh mang qua trong cong tac ((than cau) OR (than cap)).
• Adding a wildcard symbol may retrieve word variants: doc trinh tinh - nhanh mang qua trong cong tac ((than cau) or (than cap))*.