Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
trong dong » trong cong, trong nong, trong dang
hoc thieu » toc thieu, hoc hien
dong than » dong thanh, dong thuan, dong chan
tang cua » mang cua, hang cua, tang luan
than cao » toan cao, thai cao, than cap
doi chi » doi khi

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) or (doi chi)) tinh - hanh ((trung tuan) or (tang cua)) dung trong dong than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doi chi)) tinh - hanh ((trung tuan) OR (tang cua)) dung trong dong than cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doi chi)) tinh - hanh ((trung tuan) or (tang cua)) dung trong dong than cao*.