Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
tong huong » thong huong, tong thuong, cong huong
hoc thieu » toc thieu, hoc hien
huong ban » huong dan, huong ben, huong lan
dung vat » dong vat, dung dat, dung van
ban phan » ban phap, van phan, ban than
phan tap » phan lap, han tap, pha tap
bang va » hang va, ban va, trang va

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 tinh - hanh ((((dung va) or (dung vat))) or (bang va)) tong huong ban phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh ((((dung va) OR (dung vat))) OR (bang va)) tong huong ban phan tap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh ((((dung va) or (dung vat))) or (bang va)) tong huong ban phan tap*.